To an extent.
Based solely on my experience: if I send a stand-alone reasonable-to-generous tip via DM, with a specific considerate message attached, the savvier gents do tend to reply. But most other kinds of tipping -- prompted tips on public videos, tips without comment, tips with banal "ur hot" or "i wanna" comments, simple dm video purchases, etc -- do seem to go direct to auto-reply or the slush pile.