Offering a warranty, and actually doing what it says, are two different things. GWM is a case in point, as a seaside-dwelling Australian found when his GWM was rusting out after 12 months, due to poor corrosion protection. To make the situation even more farcical, the dealership that refused to honor the warranty was located in the same beach environment. I understand the situation was only resolved in the customer's favor when Australian consumer law was invoked, there are no such laws in Thailand.
There's nothing mind-boggling about anti-China sentiment. It's the nation that gave the world a pandemic, and the origins of coronavirus are still unknown because the CCP will not allow an open investigation of the source. It's done some pretty nasty things inside its borders to its minorities, and annexed Tibet. It is building up its military to have a shot at Taiwan. One of the most polluted and polluting countries on the planet, due to its commitment to economic growth at any cost.
The CCP started a trade war with Australia as punishment for politicians speaking their minds on human rights abuses. That rebounded badly when items such as lobsters and wine found other markets, making what got to mainland China even more expensive.
When Chinese tourism was at its height in Chiang Mai, I learned from several Thai shopkeepers they detested the Chinese. Rude, pushy, forever trying to drive prices down. Crowded out other potential customers.
Personally, I've found Chinese to be polite and helpful as individuals. When they are in a pack, they change completely.
Perhaps you can enlighten me, what's there to like about China?