$ ssh -T postgres@${node3} "/usr/pgsql-14/bin/pg_ctl -D /var/lib/pgsql/14/data start"
waiting for server to start....2023-10-19 19:23:42.947 MDT [2053] LOG: redirecting log output to logging collector process
2023-10-19 19:23:42.947 MDT [2053] HINT: Future log output will appear in directory "log".
done
server started
^C
This has nothing to do with ssh. The start command is behaving as documented. Read the documentation for it to understand why, and what your options are.
David J.