Indeed, "planned obsolescence" is part of Their efforts - make things last a shorter length of time and People will be in buying more in greater frequency (and also, the cost of production virtually always goes down).

But there is more to it, I suspect.  They are giving Us things that will deteriorate so (perhaps) when Our civilization vanishes, little evidence of it will remain, and They can again create "history" to Their liking.

It is clear that "history" has been rewritten more than once.

I have been reading a Substack by Jordan Nuttall, where He presents a large amount of evidence that Tartaria was deliberately erased from "history."

Jordan Nuttall, https://substack.com/@jordannuttall

There are Ones who have been "managing" Humanity for a very long while, and I suspect They are Roman.  They are quadrillionaires.  And We never see Them.
 
Your Attention is Worth More to Them than Money  (article):  https://peakd.com/hive-128780/@amaterasusolar/your-attention-is-worth-more-to-them-than-money