Weird combination of topics
Let's take them apart? I'll do the first question.
Do you think that chinese culture is a burden?
Instead of generalizing, I shall answer in a very specific context, which is whether Chinese in South East Asia, most notably in Singapore, Malaysia, Thailand and Indonesia is a burden. To give more perspectives in Malaysia we can just peek at our neighbors.
Singapore is the odd one out in this respect. They are volunteerily giving up more and more of their roots, in favor of the modern outlook. The government had since tried to reverse the trend, most notably by enforcing this speak Chinese campaign in 79. In many parts of Singapore, being Chinese makes you better off, entering high levels of governance, military, etc.
Indonesia used to be on the other end of supression. No Chinese characters, no Chinese names, no Chinese schools, no Chinese cultural practices. Nothing. One country, one nation, one language. In exchange for stripping the Chinese of their culture, they were given leeway to control the economy. The rest is history. Just last year, they finally "reintroduce" Chinese culture. Finally you get to see temples in operation, lion dances, etc on the streets.
Thailand embraced democracy. But this says nothing about the 50 families that control the economy of the country. Not to the extend of Indonesia, Thais all have Thai names, they are predominantly buddhist so there is less of a clash in beliefs. Chinese can be in power (Thaksin is a Chinese), and most Chinese simply assimilate. Culturally, they are unique - and it has been many generations since they assimilate.
What does this tells us about the Chinese cultural burden in Malaysia? The Chinese in Malaysia are not in agreement on assimilation, some of our dirtiest political soap opera comes out of our Chinese practise in general. Yes we can avoid Indonesia's riots and our own May 13 by doing so, but at the same time we will not reach the Thailand stage where it doesn't matter. The Chinese are not out in the majority and the chances of this happening is extremely slim so Singapore's justification of continuously carrying your culture in hopes of better life doesn't fit the mold. If you see it in this light, then it is justifiable to say that carrying the Chinese culture has no future.
What about the other way round? Practising your culture in a multicultural setting freely with friends from other cultural background respecting you might be the best feeling ever! My own experiences says that having Malay and Indian friends coming over for Chinese New Year gatherings is very very valuable. I felt good because I served a number of my Malay friends "Yu Sang" last CNY. Maybe this is why Indo is reintroducing Chinese culture? (save the political ploy) But at the same time, the Chinese carry their culture out of routine and habit, rather than government coercion. Isn't this better than the Singapore story I just made? People actually feeling proud of what they do instead of people doing things that the government telling them it is good for them.
The last thing is about Thailand's way of carrying culture. I'm not sure if I can find any reason not to pursue it in Malaysia. Given a chance, I'd still like to see a multiracial Malaysia, doesn't have to be Meritocratic, but at least everyone stands a chance to be the leader. We shall see.