@ram.mohanreddy Let me respond to your posts point by point.
Could you please tell me where it says bluetooth features requires a subscription? I dont see any info posted of that kind anywhere. As for why you cant see bluetooth enabled currently, Ather has said it will be enabled by Feb 2021 (via software update which will be delivered regardless of whether you are on a sub or not).
Ather Service is free for one year if you preordered before Jan 28th 2020. Ather Connect subscription that includes google maps, Ather app etc was not part of the offer. You may have received an email from Ather on this.
Please see below image from atherenergy.com for your reference. Info is available if you scroll down to the bottom.
The Ather 450 too is a connected vehicle (i own one) and has subscriptions for Service and internet connectivity. The point i was making is that subscriptions have been going on since 2018, now carried over to the Ather 450X as well.
Improved subscription model announced based on owner feedback (450 owners primarily) over the last couple of years - quoted below.
Ather responded to this a few days earlier that a fix is in the works and until then subscription costs for connectivity are waived. Info quoted below.
Most definitely not, but easy to confuse since i am a passionate owner of an Ather 
I hope the above information helps ease your worries.