They may be faking but millions of people who use wheelchairs are capable of standing and walking short distances. At major events like the World Cup there is a lot of standing in lines, walking around and enduring hot weather. None of these things are easy on healthy fans, for the chronically ill, they may be prohibitive without the assistance of a wheelchair or other accommodation.
Constantly accusing people of ‘not being disabled’ creates an awful stigma for those with invisible disabilities in particular. I had a roommate in grad school with a heart condition. She was in her early 20s and had a disabled parking placard because some days her energy was so low that it was difficult to walk more than a short distance. She was constantly harassed by ‘well meaning citizens’ for abusing the parking system, of stealing her tag from a grandparent, of lying to get it, etc. That type of harassment helps contribute to psychological issues of anxiety and depression for those of us already struggling with health issues.
So, please, avoid making knee jerk accusations about the disabled in your daily lives. We’d really appreciate it.