If you're early in your career, they probably matter and it might be worth it, but for me it's not.
Maybe it'd be different in Silicon Valley, but in London they just aren't willing to offer enough over and above the kind of jobs I've had elsewhere to be worth the misery (with the big caveat that I'm at the high end of non-FAANG London market rates; for someone who is not, FAANG may be worth it here too)
Other interviews back then and more recent were pretty much the same. Max. 3 x 1h-ish meetings. I do have a bad habit of asking the interviewer to sell me the job on the first face 2 face meeting though. This does offend some of them and we drop it there. No point beating around the bush and wasting time if they think the interview is a one way street.
I also tend to make it clear from the outset I will not come cheap, in a "are you sure you can afford me?" kind of way. Not mentioning specifics, but making it clear I know my market value and won't consider low offers.
Some get very taken back, but it sets a tone. I think you're absolutely right you need to make sure they know it's two way, and to give a clear impression they're chasing someone high value, and that they're not the prize, you are.
But if their pitch is all about "changing the world" but they're not willing to share the upside, I know I'm wasting my time, so I want to make sure they know that I expect my share too, not just fuzzy feelings.
E.g. I a while back came across a company that was very proud of how rapidly they were growing, but somehow thought that mattered to me when they were not willing to offer any shares or options. I was meant to be excited about making other people rich...
I pointed out to them I've not once taken a job on terms like that in the last 25 years and called off the process after the first interview. I also explained to the recruiter just how far off market they were for someone at my experience level.
If that had happened after 5-6 interviews I'd have been incensed...
FAANG recruiters in particular also seem to get confused when I insist on getting an indication of salary range and option/rsu amounts before being willing to agree to an interview. Several times I've had recruiters come back to me days later after digging up the information, as their first line seem to not even know, just expecting people to be all excited they're even calling. For my part I'm shocked more people aren't having that conversation. But that does explain leaked info some time back about how Facebook is dealing with high rejection rates once they actually give offers.