Yes, and I'm fine with that. It's supposed to be a public server, after all.

I found mine on that list even though I didn't sign up.

I've been having the same problem for about a week now, intermittently. ElectrumX has been running on my Raspberry Pi at home for several years, but now it is even bringing my internet connection to a halt.

What do you mean? I think you're wrong here.

The probability of you finding a block in any time period of fixed length should be independent of what everybody else does (if we ignore difficulty changes).