You’re really, really poorly informed on the battery issues. Apple didn’t slow phones down. It’s a basic fact of physics and chemistry that all rechargeable batteries will lose capacity over time, even if they’re not used. Once the capacity loss is high enough, the battery cannot supply enough current for demanding times and the phone would just shutdown without warning. All that Apple did was slow down the processor to avoid shutdowns so that phones with older and aged batteries could be usable for longer. This is contrary to ignorant allegations like yours.

What I’ve said above is not new. IIRC, Android also followed in the same footsteps much later.