Here is my attempt to archive r/homelab before it went dark. Google says there about 92,400 results for site:reddit.com/r/homelab, I have 2098, that’s only about 2% of it. Maybe there is something of use to you in that 2%.
Please don’t webscrape, if you want all the data you can get the raw BDFR archive at https://archive.douwes.co.uk/reddit/homelab.tar or the live web version at https://archive.douwes.co.uk/reddit/homelab-web.tar
Processing power isn’t really the issue, but ensuring that whatever we do is stable & reliable (we can’t just run it off a server in my office, running a bot there is fine but a sub not so much), open (the de-federation issue) and not difficult to moderate (Not gone in to much detail but apparently it’s lacking)