I'm running an Intel Meteor Lake laptop with Linux and it's reasonably well supported with pretty fresh kernels (6.7 and later). Compared to an AMD desktop that I use, both have had occasional minor defects. The Intel systems have also done a lot to close the performance and perf-per-watt, even under Linux.
I think the graphics performance and compatibility is a bit better on AMD. That would be the only reason I've experienced to lean that direction. But I think both are very usable, so other factors like price, availability, recency, are probably larger factors to focus on.
I'm not sure it makes much sense that gitea is a bit too heavy, but forgejo (a fork of gitea) runs perfectly. But forgejo appears to have more developments momentum as a project and so you probably landed on the right choice anyway. ๐