The point is when microtransactions are involved, the gameplay and overall quality of the game suffers, because they are no longer the priority, the microtransactions become the priority. Decisions will be made by the game developers to increase the spending on microtransactions with less regard to the effect on gameplay, and from the studio perspective, this is fine as long as its profitable. In the short term this could be true (despite bad reviews these games tend to still be profitable), but in the long run this is rarely true as they end up milking the loyal fanbase for as much money as possible with the mtx, until there is no one left to milk and hence the IP dies.

This approach doesn't look to add value to the existing IPs, it looks to drain as much money as it can out of whats left of the IP, before shelving it completely (and then coming up with remakes of the old games after 10 years etc.)