We have so many issues, but compulsory voting is not one of them, in my opinion. If you feel so strongly to not vote you can abstain by an informal vote like roughly 5% of the country does on any given election (https://www.aec.gov.au/Voting/Informal_Voting/) or simply pay the AU$20 (roughly US$13) fine like apparently around 5-10% of Australians do on any given election (https://www.aec.gov.au/Elections/non-voters.htm).
In my view, and in the view of many Australians, people encouraging further "freedom" to not vote are attempting to suppress votes, a major issue in the United States and other countries with optional voting.