Basically, we now get everything we have long and hard grinded for within one week.
The gym system is broken (it was broken befor too, but in a different way), but the highly overpaid raids will have are much worse impact on longterm motivation.
I hope, i get some more rainbow-candies and TMs until niantic notices and changes this.
After a short period, we will notice that raids do not give us all. Even if you have cought 10 Tyranitar and 10 of each TM and 100 rainbow-candies, we notice that still dust and trainer level hold us back from getting stronger pokemon. So gameplay comes back to pidgey-grinding.