i was actually seeing it as a limitation maybe no user will use as a means of source of revenue, so if no limitation or restrictions a user could use a whole day to task himself to earn more instead just playing as normal. It is already tagged play to earn so everyone has to partake of it not only for a some sets of persons but for everyone out there to enjoy and benefit from the P2E gamified platform.
That's what he said, there is a limit but there are actually people that use axie as a source of living/income or they treat it as a job in other words because of the potential profit that they can earn on this game and it is not hard to do, you know sometimes people are lazy to work on a real job because they are not playing a game on there to earn. Axie got popular because of those people and those people usually reside on the third world countries.
You are right, if this game has no restriction, they will allocate most of their times here in order to earn huge. That would be easy money so the developers of the game didn't want that to happen as that can make them more lazy and will only depend on this game to live.