Nothing wrong; everybody just do it as you like, as long as it's profitable.
But the saying "Unlimited loss with Puts" is indeed wrong, as was also stated by you. See also this table:
View attachment 296119
Btw, I too had started with CashSecuredPuts, but now I'm extending it to an
options spread by adding a cheap LongPut to the ShortPut (giving a BullPutSpread or BearPutSpread). And recently even including
diagonal spreads incl.
calendar spreads (ie. where DTE of LongPut > DTE of ShortPut). Some 3 and 4 leg constructs (like
LongButterfly and
LongCondor) are interesting too, but for the time being I'll stick with just 2 legs only, since this is easier to handle as well easier to automate.