Declining BJ/TJ does not mean he's not interested in sex... it simply means he's not into BJ/TJ and, from my own first-hand experience, that wouldn't be much of a problem for most women.
Yes, it does. I can only suggest you re-read the post you disputed, the list he wrote specified "vanilla sex":
And a guy who doesn't really seem into the handjob (or the blowjob, titjob, vanilla sex, etc) probably isn't going to get that invite
He didn't say "declining", he said "doesn't seem into it".
If someone is not enthusiastic about having any of those sexual activities performed, it would be pretty strange for their partner to suddenly, out of the blue, suggest they come down to her dungeon and get tied up & whipped.
These things are usually broached slowly. You test someone's boundaries - what are their kinks? Then see how far they're willing to go, how experimental they are.
You don't just automatically invite them to a sub/dom, or BDSM session, without some form of prior indication that they'd be into it.
It's a matter of how the other party (male, female, other, no matter) will percieve it. To the biggest majority, if their partner declines the most basic sex acts, it's seen as "ho, they're not into me, I shouldn't push further".
This.
You said it better & less crudely than I did:
If a woman isn't happy with your hands groping her tits through her blouse, then it's a fair assumption that she doesn't want your fingers inside her pussy.
You would need to be rather ignorant, or rapey, to try.
If someone is not ready for a lesser form of intimacy, they are unlikely to be ready for a greater degree of intimacy.
Same message, though.