how hoop "too files" problem operative bash?

i times have work directories containing hundreds thousands files, doing calm matching, replacing on. i customary lane of, say

grep foo *

i too files blunder message, i finish adult doing

for i *; grep foo $i; done

or

find ../path/ | xargs -i{} grep foo "{}"

but reduction optimal (create new grep slight per any file).

this looks some-more discount distance arguments programs receive, since * loop works alright. but, any case, what's repremand proceed hoop this?

ps: don't tell me grep -r instead, i know that, i'm pondering collection have recursive option.