The camera is of course the biggest drawback but apart from that, everything is fine.
The Galaxy S5 was one of the most popular phones and I especially bought it some years ago, because LineageOS support was supposed to be good. And it did run kind of ok, but certainly not "as snappy as a modern device just bought from the store".
And no, it does run as snappy as a modern device with the latest Android flashed to it, I can make a video if you don't believe me. Ironically it's even faster now in Android 13 than it ever was during its prime era.
You definitely would have much less luck with a random huawei.
You can have a look here on how it looks like for me, I do consider it snappy
How does browsing works?
Apps are opening quickly, animations are fast, typing doesn't lag, yeah I do consider that snappy.
Sure if you start a game, it will just destroy the poor gpu and the camera is garbage by today's standards but that's expected.