I have a Thinkpad T590 with Fedora 36, which is 24deg celsius when idling already spinning up the fan, so collecting hints on saving power. Also, to improve battery life.
Downsides of cooling: depending on what you implement
your system might react slower or not at all to requests of higher performance. I.e. lowering maximum cpu/gpu frequency and disabling boost can lead to lower framerates in games, bad performance for video chat software, and so on. Many settings can be done so the system offers power just as needed, so adapts dynamically. Otherwise, you could i.e. with 'tlp stop' before doing video chat do the tuning yourself.
security implications: reenabling cpu features which were disabled for security reasons will make the system vulnerable to certain attacks. Be sure to understand this.