Except in this case the maker doesn't make a claim about IPX7. What does that tell you about the quality of this optic?
The maker of this optic also says "The FXV22 is highly impact-resistant, capable of withstanding drops from heights of up to 5 meters".
I'm an engineer. What are the units of "highly impact-resistant"? 5 meters is over 16 feet in the air. You are going to tell me they've dropped the optic from 16 feet in the air and it landed on the shroud with no damage and continued to operate? Really? An optic with a glass lens? (by the way, is the lens glass?) Why? Aaron Cowan drop tests his optics at arms length, say 4 feet, or just over a meter, because that's what might actually happen to someone. Why would an optic maker drop test from 16? That is just an odd choice.
Military eye wear is tested to MIL-PRF-32432A "Performance Specification: Military Combat Eye Protection System (MCEPS)". That is what you call an impact test. What tests do Fox Army do to claim they are "highly impact-resistant"?
The maker further claims "It can withstand extreme recoil, having successfully passed a 5,000 round test with 9mm ammunition".
What are the units of "extreme recoil"? What is "extreme"? What is "successful"? What 9mm ammunition was used? Winchester White Box? Did they use +p?
Bottom line, unless you have some data, these are all advertising slogans and manufacturers jargon, and don't do anything to objectively quantify the performance of this product in any meaningful way.
But that's not the real question here.
You come on the site and with your first thread, proudly state "I have a Fox Army FXV22 PRO mounted on my P365X and it's a great red dot!"
Cool. Everybody wants a cheap optic.
But if you are going to recommend a red dot for a gun, you should expect people to ask why, and for you to back it up. That's why you are getting push back.
Not because of your choice of optic. It's because of your relentless and enthusiastic pushing of this product. You are welcome to use whatever you want, at whatever price point you want to operate at. You do you.
Others are going to make their own choices, and may be leaning towards a higher quality, proven product, from a known manufacturer with US based customer service, that's been on the market for a while, but at a price point above this Fox optic. Examples might include a Sig Romeo X, or Holosun's k series, or Vortex Defender line, to name a few.
If you can provide some data to back up why they might not want to do that, and purchase this Fox Army thing instead, I'm sure this thread would be a lot more interesting to people.