You're an alarmist, and again with no history of posting I would also question as a forum member why you're bothering.
Here it is. If you can manage to exert 90lbs of pressure on your device everyday whether seated or standing while doing some other activity then you're the problem. The phone is durable enough for every day use and therefore forcing up to that amount of pressure does not count as such.
I'm unsure why you continue to persist? I suspect that on a mac forum it would give you great satisfaction to state that it is inferior. That is what you wish to achieve isn't it.