Yes, the forum is indeed having a better pleasant atmosphere now, with the ZTP in place and the needful action being taken by the Webmasters when things go out of hand and the policy is breached. The aim of the policy, though, is not to say good riddance and keep away members, but simply to douse unhealthy flare-ups to maintain forum decorum.
I had contacted Natarajan in mid-October and enquired about his absence in the forum and other contributions. He stated that he was busy with other commitments and would join back once it's manageable. So let's hope that is soon! I also contacted K Mohan twice via FB, but he neither responded back nor resumed forum participation. He did, though, put in a brief comment to one of my articles. Perhaps he no longer has an affinity to ISC in general and to the forum in particular. Members like Chitra and Saroja were also fun to have around in the forum. A couple of members who were regularly active in the forum have also turned their focus more on the AE section.
When people come at you with their worst, you should come at them with your best (advice given to Selena Gomez by her mother, quoted in Time magazine.)