These are opinion. Don't forget: https://download.wpsoftware.net/bitcoin/pos.pdf
Jonald and another said/think POS isn't secure. I have made no comment on POW. Where is the proof POS is insecure that isn't argument from authority or strong belief?
Yes, opinions from security analysis and experts which is based upon reason , logic and evidence. These experts create models and run mathematical simulations to test their hypothesis.. but i guess to you one opinion is as good as anothers.
Where are the models?
I posted the POS models that back those papers above. You can repeat and verify the results, if you were so inclined.