While they may not share an etymology, bokeh does sound incredibly close to “bouquet”

The primary difference is the emphasis on the “oh” in bokeh vs. the emphasis on “kay” in bouquet.

Indeed I agree. I have heard plenty of people mispronounce 'bouquet' as 'bow-kay'... which is pretty much the same sound as 'bokeh'.

Hm, TIL. I pronounce bouquet like “boo kay” and bokeh like “bow kay.” But MW says either pronunciation is valid for bouquet.

Autocorrect is very likely the culprit here.