Long Rest Downtime Spell Prep and Crafting

On these forums I had a bit of a debate whether crafting is part of the Long Rest or not. It isn't the first time and I've had it go both ways. As a DM unless a player rolled a complication or it is hard to craft like a Legendary or something then I let them do it as part of the Long Rest to keep things moving; but then I do make my players gather the supplies and find somewhere they can craft (just because you have the tools doesn't mean you have the space). I also count ammunition and weigh coins in my game. Honestly I am fine doing independent downtime but as an Alchemist main then it means I have to expect both the DM and party to provide the downtime. They recruited an Artificer (or any spell caster) so they should be aware the class requires the downtime to play.

So, I went back through the rules and in the current edition it isn't concrete. If the crafting isn't strenuous then it can be part of the Long Rest but the only tools that say clearly crafting items (and only certain items) are part of the Long Rest are Alchemist Supplies. So, what about Calligraphy? How much effort does it really take to write a letter? Then there is the issue with Wizards because they get to choose spells for their spell book but they still have to transcribe them into the spell book which costs time and money. So, when they level do we need to spend a week of Downtime so they can add their new spells or can that be included in the Long Rest the excerpt on it in the book isn't clear. It doesn't say they are automatically added it says they have to be added so we know the Wizard has to spend time doing it and it doesn't say they are part of the Long Rest instead the cut out on adding spells says it takes an hour per spell level on top of gold. To be fair only Adventurers' League ever forced me to spend the gold to add spells which I thought was bogus because I was playing a Scribes Wizard and they have magical ink so why wouldn't I just use that? I digress, there is also the complications of preparing spells as in earlier editions like 3.5e it was something done after the Long Rest and it takes time:

"Spell Preparation Time, After resting, a wizard must study her spellbook to prepare any spells that day. If she wants to prepare all her spells, the process takes 1 hour. Preparing some smaller portion of her daily capacity takes a proportionally smaller amount of time, but always at least 15 minutes, the minimum time required to achieve the proper mental state."

Whereas 5e and 5.5e makes no distinction on how long it takes. So, are Wizards and other casters now also a serious drag on time during the campaign now? That is how they were for 1e and 2e but no tables actually play it that way making the party Long Rest then spend a full day preparing spells? And before you say it only takes an hour in 2e the time was based on the spell difficulty rating and the example of a failed spell preparation in the book is for a single spell that takes 4 weeks to prepare.

Then we have things that extra muddle the situation like the Traveling Tools from Acquisitions Inc. that are meant to be used at a camp site to craft implying it is part of the Ling Rest and the teaser video for crafting 5.5e made it sound like crafting and spell preparation is part of the long rest along with gaining the new spells. I get it if these classes should be slowing parties way way way down but no one is really playing it like that except when it comes to me being an Alchemist because, yes I know, Alchemy is utterly broken but it is unfair to ignore the spellcasters who should be also slowing everyone down which would build in the time for me the Alchemist time to brew. It also kind of does make martials make sense since they wouldn't need weeks to prepare a spell and could just get the drop on us prep-time required classes; but again, no one really plays it like that.

Maybe they left this up to the DM to decide because, yeah, we do all do things differently. I mean how many of you weigh coinage? Nonetheless, some concrete clarity would be nice.