NO others, (including clearnet nodes) can connect to a Tor node.
The best why to support the Bitcoin network is to buy and hold bitcoin. self custody it and use your own Node to verify you received it.

Clearnet nodes cannot connect to a Tor node. The DNS won't recognize and route onion addresses as they're contained within the Tor network. You need to have the node connect to Tor via a proxy.
The converse is true, Tor nodes can connect to clearnet nodes.