The main problem with Monkey Island is that the narrative of the art has changed. If you fill in the details of the original artwork, it was in the realm of realism - not this modern cutesy mobile game semi-cartoon scourge. The protagonist has also been completely changed.

I didn't have the patience to push through these games as a kid; even as someone who doesn't have the usual attachment to Scumm games, seeing a masterful work of art changed makes me uneasy.