electrum – Is my Tor bitcoind node seen by new normal nodes?

I have finished configuring a bitcoind node behind Tor as in method 1 of this guide

I would like to be as useful as possible for the network and especially for the new nodes that try to synchronize.

Can new nodes see me directly from the bat even if my port 8333 is only open with a .onion IP address?
Unfortunately I can not open port 8333 because I am behind a firewall and charges my ISP for a public IP address.

If I want to configure an electrum server (electrumx) with the address .onion, will it be easy for normal electrum wallets to connect to my machine?

Thank you