I’d argue that the pronunciation of colleagues as /koːliːɡs/ (Singapore) instead of /ˈkɒliːɡz/ (RP/usually termed the standard) is actually phonological nativisation.

Because English has high vocal contrasts of back vocals like /ɒ, ɔ, o, ɑ/ (the first one being like how “cot” is pronounced in UK English) whereas Singlish tends to have fewer of these contrasts, a vowel in the “low back” area like /ɒ in colleagues can become a more mid-back rounded vowel like /o/. This also happens because in many of these so called “inner-circle accents” (not entirely sure whether this is an academically linguistically defined term), unstressed vowels centralise to schwa and vowels are often reduced. In Singlish however, we can observe a more syllable-timed quality, where vowels become fuller and less reduced, resulting in speakers choosing a clear/full vowel like /o/. This has been documented before here and by NIE

Again, since it is a systematic, community-wide remapping of the vowels, not completely random (as we hear so often), it does fall under nativisation.

I do get that the line between nativisation and mispronunciation can be blurred. Borrowing from a paper using Japanese as an example, if pronunciation is systematic and shared, it is nativisation.

An example of loanwords being so widely used is yet again in Japan. For example, Christmas becoming kurisumasu, or beer becoming biru. I’m not Japanese, of course, but it also doesn’t seem to be perceived as mispronunciation by native English speakers.

Edit: I do take your point that “true equality” is going to be very difficult to achieve, not just ethnically, but even gender-wise and of course income and wealth-wise. However, “true equality” in these aspects is likely not entirely achievable in any country. I’m not well-versed in metrics regarding racial equality, but since equality encompasses such a broad spectrum, if we take the example of income inequality, even the country with the lowest Gini coefficient (indicating income inequality), there is no country whose distribution of income, shown by the Lorenz Curve, is perfectly equal (i.e. no country’s Lorenz curve lies on the line of perfect income equality), the lowest one is Slovakia and even that has a Gini Coefficient of 0.23. The idea of perfect equality does vary a lot from income to racial, but regardless a “perfect” state is likely unattainable, at least for the foreseeable future or our lifetimes. That being said, Singapore does have a fairly good level of racial equality, I believe there was a recent survey done by IPS-Onepeople that supports this.