Its hard because laws that ensure basic civil rights go through the same process as tax law, but one is vitally more important for a better future for all
Yes relying on achieving popular support before acting will always mean that change happens later than it really should, but I think this price is worth paying to ensure long term support.
I do think political systems that reguire building broad popular support are desirable in general because they encourage openness.
You basically cannot get out of it unless you can convince most people that it's a good idea. With a 2-party system you can get someone who represents those people to rule for a while and maybe correct the course.
Also, with optional voting, we basically delegate decisions to those who really care about something. Having lived in a country with mandatory voting, I saw a few elections where people's views and the results of some elections were easily manipulated by false news close to the election day. People who are ambivalent I think are more likely to change their decision over such things.