Its comedy, y'all!!
Mengi hakuwagundua ze comedy and it is possible its the other way round! I knew of Mpoki and Joti via VHS tapes a long time before ITV/Channel 5 had a foothold in Tanzania. I knew of Seki from his primary school days acting in maigizo, ngonjera na michezo while a student at Sao Hill in Mufindi. I don't know where Masanja and the rest came from but it does not matter, since the group "Ze Comedy" was formed BEFORE they started appearing on Mengi's TV!
They do have a beef with Mengi because they did bring in a lot of income to the station because advertising during their show was hot cake to Tanzanian standards. Mengi was not paying them enough, or so we hear, despite all their popularity and success. When it came for them to jet, whether by Manji's hand or any other fisadis(by that time the word "fisadi" was not in the everyday vocabulary in bongo), Mengi, because he had the clout and the money, barred them moving on with their name and characters - today we see on TBC1 "Noname 1" "Noname 2", "Noname 3" etc
My suggestion is if you do not like what YOU PERSONALLY see than change the damn channel and watch FUTUHI (which, incidentally, I tried watching them and I really don't know what the hell they are doing, to be honest! I just don't watch them as MY PERSONAL choice) I remember some people said that even the magnificent "Dude" of "Bongo Darisalaam" was bad influence to society - I think he is hilariously great!
"Enzi za Mwalimu" people watched anything they wanted (TV Zanzibar na cinema za Chalii Mnene na Chalii Mwembamba, na Chalii Champlin). Siku hizi "Wizi Mtupu!" Watu wanataka kuforce down other peoples throats their junk opinions! "Najuuuuta kukufahamu"