# Desilylation mechanism with fluoride

I want to understand the mechanism of desilylation of trimethylsilyl under fluoride conditions in methanol, because I can't find any useful info that makes me understand the mechanism that takes place.

I did find this:

But my case is a little bit different because a terminal alkyne is bonded to the silyl group instead of oxygen:

Why would that bond be broken and not any other carbon-hydrogen bond?

Bear in mind that the $$\mathrm{p}K_\mathrm{a}$$ of an alkynyl proton is approximately 25 (ref 2) so this is a far more stable anion than any possible alternative. Clearly with $$\ce{MeOH}$$ as the solvent it will be quenched immediately.