As long as you use reasonably secure way to add entropy into the pool, ie. don't XOR stuff into some kind of pool buffer but use something that at least partly

As long as you use reasonably secure way to add entropy into the pool, ie. don't XOR stuff into some kind of pool buffer but use something that at least partly resembles secure hash even for adding entropy (as using full-blown SHA-x to process interrupt timings and similar high volume low quality entropy sources is not exactly practical due to both performance and synchronization issues). Also, total entropy is not necessarily the same thing as attacker's uncertainity of the pool's state. The difference seems mostly theoretical, but there are practical issues for both cases of these two quantities beeing wildy different.