I have been asking the same questions, dont think anybody here opted for it.
I visited multiple cafes to understand it further to suppress my urge for a new phone every 3-4 months

There is nothing special about it, it is as good as buying a Samsung phone on your credit card emi for 18 months with Care+ for one year, plus some caveats.
- You cannot preclose the 11 months emi (you cannot sell your device during the term, if you do, you continue to pay the full amount until 18 months)
- You are not eligible for the prelaunch cashback offers, you pay for the full device cost.
- Payment is through Samsung Finance app only....when you find time just read its reviews on Playstore.
- After 11 months you are limited to upgrade, to only a list of eligible GFE devices, decided by Samsung (none of the foldable phones are part of it yet).