If you are not free to choose wrongly and irresponsibly, you are not free at all.
Measure 66/67 effects that can be seen will be small and invisible in short term. Nobody will leave tomorrow. Govt. union employees who pushed for this will keep their jobs for the short term and will be happy. It will look like jobs have been saved.
Effects that cannot be seen: Companies and educated people who will decide not to come to Oregon. New companies that will not be formed. Companies which are on the edge of bankruptcy that will close with tax on Gross revenue rather than profit. People looking for change in career deciding to move outside of state. etc. etc.
Imagine mice on a ship of cheese eating through the cheese. Who wins???