honestly at this point I don’t consider it worth continuing the discussion here, as it doesn’t seem that you understand enough of what you’re talking about, despite your claims of dealing with it for “years”, yet you keep implying that i’m likely the one being wrong or even lying/misrepresenting things.
the second screenshot is from the same browser as the first, both are in firefox, using the tor browser variant in safest mode, which blocks even more than the average noscript installation in firefox. tor browser is a hardened variant of firefox esr. if it works in tor browser without loading js from third parties it’ll very much do so in any other browser. the screenshot is from macos, which is probably why you’re not used to it, but that’s just what firefox on macos looks like. this is my standard firefox install: 
besides, if lemmy was loading and executing javascript from other instances, this would be a massive security issue, which is yet another reason why your claim of loading js from other instances is ludicrous for someone who knows how these things work, at least when you keep insisting on it.
as i mentioned before, noscript is not an extension that is easy to use without some basic understanding of how websites work. if you’ve been having issues for years due to not understanding these things and how to deal with them properly that suggests that it’d probably be better for you to just switch to something like ublock origin with anti-tracking filter lists if you’re not planning to spend some time learning how websites work and what the different types of blocked resources do.
i don’t even see how you would be blocking images with noscript, as there doesn’t even seem to be an option for it. unless of course you’re confusing noscript with something like umatrix, which does allow blocking images by default as well, but it would also clearly show that there is media blocked and not scripts: 
anyway, if you’re truly interested in understanding these things and not just rant about them please do some research on the technology being used.
i can see rust being a bit more challenging to support properly in an IDE and there still being various special cases not handled properly, and i’m glad that it’s free to use non-commercially, but with jetbrains rustrover i frequently see it calling out errors in code that happily compiles, autocomplete being semi-random in how it wants to complete today, which seems to have gotten worse with their recent AI pushes, and even a couple times the entire IDE locking up not too long ago, though i don’t remember whether the last part was in rustrover or one of their other IDEs. overall pycharm has been pretty stable for me, as long as you provide it with a pre-existing venv or let it create one for you, as the integration with the latest and greatest™ python package manager may not be there yet.