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This is technically correct, if you consider that "the majority of people living in the USSR" means Russians.
Who had absolutely no right of input into whether Ukraine or Belarus should remain part of the USSR. https://twitter.com/historic_ly/status/1296520443055280129
Who had absolutely no right of input into whether Ukraine or Belarus should remain part of the USSR. https://twitter.com/historic_ly/status/1296520443055280129
in case you were curious these were the results of a referendum less than a month before on whether ukraine should remain part of the ussr :)
(the numbers represent the percent of voters voting yes to independence)
Anyway, you'd actually be right that technically speaking Belarusians specifically were never asked if they want the end of the Soviet Union. But 1) that wasn't Šuškevič's fault, 2) they technically had the right, and 3) at this point all republics were states in all but name.
1) Yeltsin had already made a strict decision that Russia would not remain in a USSR with just Belarus and Central Asia. Belarus was becoming independent by default because Russia had chosen to become independent. Sometimes the colonial centre chooses to kick the colony out.
2) The Treaty on the Creation of the Soviet Union was signed by Soviet Russia, Soviet Belarus, Soviet Ukraine and Soviet Transcaucasia. The last one's successor republics had already declared independence. So legally, the three parties that had formed the USSR could dissolve it.
That's how treaties work. They had the power to do this because they (3) had already over the last couple of years successively one after another declared sovereignty, aka the primacy of local law over Soviet law. This last step only formalised that sovereignty in practice.
If you find offensive the dissolution of the USSR because there was never a union-wide referendum on dissolving the Treaty on the Creation of the USSR - you also have to object to its having been a thing in the first place, because there was no popular input into that, either.
