This post is wrong on every point.in a sense. They are more aware of AirTags existing and the Apple p2p network is much bigger than Tile's, I would never expect their crowdsource to find anything unless I knew I would be in the area with a Tile phone all to ping it. Also, a "high end" car owner in the US is pretty likely to be carrying an iPhone themselves and apple's network for relaying position is on by default.
Apple made a distributed cheap tracker fob system work, and people are taking advantage of it. Not sure there is much of a way to prevent that.
The presence of an iPhone in the car doesn’t help in tracking of the Airtag because the iPhone will stop reporting the AirTag’s location as soon as it detects that the AirTag is moving alongside. So, the iPhone will literally report the AirTag’s location once and then will stop reporting its location.
Tile doesn’t just use the Tile app on other phones to track a Tile tracker. it also uses Amazon Alexa compatible devices for that purpose, including video cameras, door locks, thermostats, Alexa speakers, etc.