Not at all, plus a lot of people who manually snipe put items on their watch list and do not re visit the listing before putting in their last minute bid.   I don't know why as a new seller you think you know better than experienced sellers what is good practice and what isn't.   Bottom line is if you want to continue risking your tunover rate and account status by changing descriptions then feel fee to do so but you won't mind if we don't bother to offer advice in the future as you obviously know best 😉

Now I'm starting to see why some people don't like certain experienced posters here. I'm already restricting my posts here but can't help but comment on this one. Not that I know better but... well... in this case... I do.

If you can show me the official eBay page that says to the effect of: "Sellers are not allowed to edit their descriptions once listed, beause some people may use a snipe program and not bother to return to check the description," I would be greatly appreciative.

All you're doing is scaring sellers from updating their descriptions when they have every right to within eBay's clearly-described rules about it. Most times it's beneficial to the buyer as it can provide previously-unthought information to help make a listing more accurate.

Since I asked you to provide a page that clearly doesn't exist, I'll provide a page that does. The official rules on revising a listing:

http://pages.ebay.com.au/help/sell/revising_restrictions.html