Seems to me that there might be room for all concerned.

I am also frustrated by the current trend of breakneck tempos so I don't go to many sessions. I tend to play music with friends that have similar tastes to mine.

Keep in mind that others have the right to interpret traditional music in different ways. I've been to concerts where the band has the audience dancing in the aisles with glee while I make a quiet but quick exit.

Maybe you should create a new session and run it your way.