At least the OP was warned, the very soft rubber that Blizzaks have so they do not get too hard when very cold, gets way too soft in summer temperatures resulting in a lot of tread loss if they are used in summer conditions.
There was something about some BMW owners who put a new set of Blizzaks on each fall and leave them on during the summer, and buy a new set each fall because they are worn away by then.
This “problem” was specifically addressed with the WS90. They last about 20% longer than the WS80.
Any true winter tire is going to suffer massive treadlife degradation in hot weather.