YES! I posted about this two weeks ago, one person agreed but the post never got any traction: https://news.ycombinator.com/item?id=28437472 I haven't heard anything about this when I asked colleagues / IRL friends... I wonder what is going on over at Google
Interestingly, they can change the font of the subject lines which no valid email I have ever received in gmail has a subject with a different font.
That would be an interesting filter: if subject is !Font, then spam.