> I can even block it with uBlock
You can also block such things in your OS. It requires more expertise to modify machine code rather than obfuscated HTML, but in the end, it's cosmetically altering software to make it look the way you want it to.
Equal levels of 'evil' either way, to me
If they had gone out of their way to add DRM specifically to the pop-up (detecting div deletion for the web version, for example), that would be more evil, but such things aren't being done for showing browser advertisements (might come as a side effect for Windows licensing, but one who chooses to employ licensed software naturally invites that)