Nevertheless, the “highly” was wrong.
And yes. It is a beta. But no matter how you look at it, since Apple has been releasing public betas, a large proportion of private customers have also been using these betas.
It is therefore strongly recommended that software manufacturers pay attention to problems with existing features during the first two developer betas and fix them with beta 3 at the latest. As this beta will then become the public beta.
And the subsequent betas are then there to evaluate new things.
Of course, you can be so snooty that you think it's only necessary to have it fixed until the final version, or some manufacturers didn't even start until then. But many of those who thought so no longer exist.
In the end, it's what the customers want and think that counts, not “that's how it should be”