Knowledge is power.
A good curator prepares the pitch in accordance with the weather conditions and generally pitch is laid down to facilitate a particular team for victory.
This leader of TMC might have been offered a fair deal by any political party. It can't be said if it's greed of CM office. God knows better. However, it is a setback for TMC. But I don't think if Mamta's image is going to be affected.
People will definitely believe them for one or two terms. If they do something for the region they will continue their patronage. Otherwise, they will lose hope and try to shift their loyalties. Even in Telangana, in GHMC elections KCR may not get the deserved majority. He and MIM may jointly get the majority.
I think in West Bengal also people are getting hit worst and the state is not getting developed as expected. That may be the reason for some leaders going away from the party. Anyhow, let us wait and see what is going to happen in the next elections.