Although that plays a large part, Muslim Southeast Asia has always been more China friendly than the rest. Even after Western propaganda regarding the Uyghurs.
In the survey itself, I think the more interesting shift is Thailand, Cambodia and Myanmar edging closer or slightly surpassing the 50% mark.
And i say anglophilia because this isnt really just a case of "we dislike or distrust both parties but i guess Chine less because history or SCS disputes or whatever". There genuinely is a very positive public opinion towards the US there and US cultural hegemony seems very entranched. To score similarly to the phillippines in such a study something is really wrong with the perception of the US among the population.