There are NO pages to be indexed.
Yes, but by writing URL in a different way, it is possible to index some pages. There is no way for a bot to tell apart "topic/12345" from some forum page and "keys/12345" from that kind of calculator. For example, try searching "site:https://privatekeys.pw/keys/bitcoin/", you will see that some pages are indexed.
"Some pages"? "Very few" might be more accurate since there's no way bot will index all of them. If the public key/address generated on
server side, the server will crash or block the bot. But if the public key/address generated on
client side, the bot will eventually crash, ran out of space or simply stop indexing the website (due to certain predetermined limit).