[allsunny]

FWIW, I had a very similar experience and have a friend who had the same. Very off-putting. I was in the second round on-site and more or less felt like I probably had the job in the bag, still at the end when I met w/ the hiring manager I told him I appreciated the time but it wasn't for me. And wow, that pissed him off. Good riddance.

[busterarm]

Sometimes I wish I had the energy to follow through all the way to the end of a process even when I know I'm not interested in working somewhere.

Waiting till they give you an offer and turning them down is probably the only way to get companies with terrible interview processes to treat their own interview behavior as signal.