You're correct in that people absolutely are far more likely to talk about a negative than they are a positive, you also need to remember that the internet is a global thing. When you look at places like Reddit or similar, you're going to see an overwhelming amount of people from North America posting rather than from the UK.
Customer support varies heavily across the globe, it's also worth noting that outside of enthusiast forums like this you'll often see user error described as a company related problem by angry and often clueless people, or worse fanboys for other companies talking nonsense (yes, they do exist unfortunately).
People still buy Asus in droves due to branding, but their customer support has been absolutely dire globally for years, on multiple levels. It can become very messy when looking for good information online for things like tech, damned shame tbh.