Some time ago I read about a similar situation with copyright preventing use of pictures of 70+ year old paintings in a doctoral dissertation. The dissertation was all about analyzing those paintings so the situation was sort of ridiculous.

Even worse, the owner of the paintings (the artist's heirs) had given their permission for the use, but the the high quality photographs of the paintings were owned by institution that requested thousands of euros for their use. While 100% lawful and I understand cultural institutions also need money, the whole situation felt really wrong and against common sense and decency.

I understand requesting money from a commercial project, but for and academic dissertation that's not fair. Same goes for emoji's that are anyways used by millions of people every day. No one is going to profit directly from a dissertation anyways.It's just stupid and should be changed.