Rotten apples are everywhere, even in companies with better reputation on pprune than Wizzair. Wizzair is one of the biggest employers in Europe and plenty of pilots on this forum have worked or work there, and notoriously people unhappy or with bad stories are more vocal than happy people.
Wizzair standard is higher than people make it here, and judging by the number of people hired by other companies such as easyJe, BA or similar training managers tend to agree.
Smaller companies, especially in eastern Europe, but not only, are in my experience far worse under many aspects.