[snvzz]

>the only turnout those will have are of those who are in favor of secession

There was plenty of turnover, and plenty of No votes, in the referendum famous for the use of force by the Spanish "Guardia Civil" police.

There just happened to be a lot more Yes votes. Like how people voted in another pro-independence government again in the Catalan elections organized by the Spanish government after they forcibly disolved the Catalan government, just a few weeks after this referendum.

[ErneX]

In no way those non binding events had significant participation from the side that does not want to split from Spain.

Plus there was no active voting census and people could vote multiple times, you can't seriously consider the turnout from those events as valid in any way.