Are you sure about that? I'm using the official AT&T fiber modem (Nokia white oval) and a pi.hole for DNS. I do remember needing to change a number of settings to get it to work though.
You probably want commercial displays. They'll cost a bit more, but they're also designed to run 24/7 (think the screens they use in menus, signs, etc) so they could probably last forever as a TV.
I've been using https://photopea.com and it does 99% of everything I would've done in Photoshop, in your browser. The only thing I've found that's not up to par with Adobe is the content aware fill... it technically works, but it's just not very good at it. And it of course doesn't have any AI assisted features. It's also free and ad supported, or you can pay $5/month to remove ads.
Windows Co-pilot just popped up on my Windows 11 machine. Its disclaimer said it could provide surprising results. I asked it what kind of surprising results I could expect, it responded that it wasn't comfortable talking about that subject and ended the conversation.
A fork would be a duplicated custom copy of the software that can have its own changes or improvements added and is usually maintained by a different person/group than the original. When a new update of the original is released, the maintainer of the fork can bring those changes into their custom fork.
Instances are (mostly identical) copies of the same fork. They'll have custom names and different logos, but the software that's running them is all version 0.18 of the same fork. They may install updates at different speeds ie v0.19 is released, some instances will update immediately, some may take a week, but eventually they'll all be updated to v0.19.
I am using the pi hole for DHCP, maybe you just have to turn off the DHCP server on the att modem.