This link shows the "Business" of parliament. I counted 105 Bills in total, in the Lords and Commons. Is that too many for the public to decide on? Very probably. So the issue is how to decide which go to a public vote... or do we accept that if they all do, only a small percentage of the population will vote on any one issue?
In my opinion the latter is not such a problem as it will be the people that the decision impacts that are most likely to have their say.