Because they are the biggest and most successful brand globally and people tend to hate them because they think they are too expensive. A bit like people hating on expensive cars but secretly they drool over them.
No... because they manufacture defective product and refuse to own it.
When you spend over $5000.00 on a system, you have a reasonable and understandable expectation that its water not leak out... or should I say pour out.
Again, search "Red Sea seam failures".