In the interests of avoiding pointless semantic arguments, you can probably safely assume that in any discussion of the relative merits of materials, the word “more” precedes any adjective describing said material’s properties. For example: PLA is more brittle than PETG.
[a] bendy part is as useful as a snapped part in every application that requires strength
I don’t agree. There are many application where a bending failure mode is much more desirable than snapping. OP’s situation, for example. Pretty sure they’d much rather they were alerted to a problem because their lights were pointing in the wrong direction than smashed on the floor.
The extra temperature resistance of PETG compared to PLA might not be a big number on paper, but it makes it suitable for many things PLA isn’t. Things for use in a car, for example, are common to see problems when printed in PLA (you can find tons of pictures of PLA phone holders melted in the sun). PETG isn’t immune but will almost always fare better in any situation where there might be heat. For example, an LED light fitting, like OP's situation.
Anyway. Do we really have to fanboy materials?
Wow. I don't mind paying for stuff if it's good. But seriously $5/month seems pretty expensive, and you only get 300 searches. $25 for unlimited searches, which seems like an insane amount of money.