Well, Pale Moon is... a unique browser. It's a one man project by a single guy. He was modifying Firefox in the past (copied source code of the original one, then ESR, and just made changes to it.) But then Firefox just progressed further and he was forced to fork it entirely. Meaning he is trying to maintain an entire browser interface AND engine by himself. Which is quite impossible.
- You can install the latest Firefox, or Firefox ESR (whichever you prefer) binary on Linux, you just download it and run. No need to even "install it" so to say.
- You can install / use Vivaldi browser. (Love that thing.)
- You can install Opera (not really a fan but some love it)
- You can install Chromium browser (Chrome without the Google stuff), if you are privacy concious.
Pick your poison.

As you can see I changed the theme, not sure if it's any better. But I also added a dozen other themes so people can pick one. Some look quite funky but have big fonts.
2) Yea we won't change anytime soon I think. It's very costly anyway.
3) I'll check the spam thing now. Not sure what they run, the Akismet plugin is outdated now and well I couldn't find anything else either. To be fair this manual queue is great, but indeed we'd need a limit to it. I tried to find a solution a while ago - without luck.
4) This theme has CODE option now, but uh, yea you will use "Creamy" anyway I think.

4..again, haha) Will check that.
5) I just approved your post, I think that caused the problem cause it was like "stuck in the middle".