I found that behavior would change a lot once I had an offer from a decent company. Suddenly all the scheduling/matching delays and processes that supposedly were delaying me would be resolved when I revealed that. It was even worth emailing recruiters that ghosted me because they would respond again. Also, offer deadlines are usually just pressure tactics and would go away if there actually was a risk of me not signing.

Caveat that I haven’t interviewed in the last couple years and this may not be the case anymore.