Due to caution toward closed-source software, I just edited the OP about the risks of using this kind of product, like Tampermonkey, as @gbianchi pointed out.
I am putting some highlights on this and a clear indication toward open source alternatives like
ViolentMonkey.
The problem, of course, is not this script, which is quite sandboxed and with open source code, but rather the script handler itself, which has aggressive browser access.
Ok fair enough!
Warning noted,
Tampermonkey disabled,
Violetmonkey installed,
Scripts added.
And I can confirm, they work just fine as before. At least yours does without any hiccups.
