No, just the OG members, i don't think the new ones heard about preev other than here. I'm one of those who have been curious why preev is very famous here when cmc, coingecko, coindesk and other cmc-like site is much more better, more accurate for average price, many option to convert, etc.
The reason why we liked Preev is simple, it showed us a price, right away, with no distractions.
I've used
BitcoinAverage a lot before as well, but now they don't even have a calculator anymore, so it has also become outdated.
CoinGecko is very nice, but can't beat the simplicity. 🤷♂️
EDIT: Just noticed that Preev.net uses the CoinGecko API, so it does actually show an average price. Very nice.