Okay you have some examples. I also have examples.
There are imams from both Barelvi and Deobandi jamats that pray with and behind each other.
It happens across the UK. So what do we have here? Is your example a rule or is it an exception? If there are other mindsets then why aren’t they taking root like I have described. It can’t be because of the difference of opinion - it has to be because of the lack of maturity in handling that difference.
Furthermore, I accept you to deny madhabs, but you will not accept the madhabs so who is being more tolerant here … the one who is ghair madhabi or the one who is not?