A lot of very interesting information has been published by LIGO and in the popular press (no insult intended, but based on what you're saying I'm assuming you don't have any deep understanding of modern physics experiments).
I wouldn't put too much weight on Hossenfelder's blog posts. She is very angry when things don't go exactly her way (in this case, IIUC, she's basically trying to hold LIGO to an unreasonable standard before accepting proof, and casting some aspersions which only experts in the field would be capable of evaluating).
None taken. I indeed don't have much insight into modern physics experiments. Can you recommend other physicist which give different insights into LIGO or other experiments?
I wouldn't put too much weight on Hossenfelder's blog posts. She is very angry when things don't go exactly her way (in this case, IIUC, she's basically trying to hold LIGO to an unreasonable standard before accepting proof, and casting some aspersions which only experts in the field would be capable of evaluating).