

Then you have bad opsec and security holes.
This matters more for some industries than others. But this attitude lets a malicious employee install basically whatever they want in service of “the job” and you won’t even know you’re being breached until after it’s all over.
According to Adblock Plus’ own blog post about the matter:
Re: Element Blocker:
So this says to me that baked in filter lists are now required, custom lists will not work, and Block Element is probably functioning illegally if it is indeed still functioning though that may change in the future in either direction.
Changing blocker behavior on specific sites is the only thing in that list that I see UBO disallow and ABP not mention at all. Not sure why that was changed.