You can trade anything locally without checks, but only legit “realistic” pokemon can be traded online. I usually make a bunch of starters and send them out on suprise trade for people to enjoy
Once again I fell down the martial arts rabbit hole and am plumbing the murky depths of the internet's various martial arts and fighting crafts echo chambers.
If you're not actively involved and only get up to speed every few years or so, you can see the tide of public opinion flapping worse than my dong while I'm skipping naked down a hallway.