Trade in benefits on new Go5G Plus

I’m currently on Magenta amplified family plan but now i don’t see any big difference between Go5G Plus plan and now i was looking to buy a phone with trade in but cant get full benefit of deal.
What a total BS ,  magenta plan is retired and now to get trade in benefits i need to upgrade to Go5G plans to avail all benefits.

Planning to buy flip 5 , with flip 3 trade in , now with Go5G plan i would get $1000 as trade in credit but now magenta is not there i can’t get that same benefit for trade in...

I feel if i'm not max plan previously i should at least get the latest plan benefits as there is no significant difference in plan benefits but huge difference in price. Been with T-Mobile for 9 years now.

Any one else feel same ? Any way to get those trade in benefits without changing plan to Go5G.