It is impossible to conclude this given Brexit was far from the only issue - ending austerity and saving the NHS were big priorities too. This doesn't work so

It is impossible to conclude this given Brexit was far from the only issue - ending austerity and saving the NHS were big priorities too. This doesn't work so well under the UK's First Past The Post system. If you wanted to get the Tories out then feeling one was throwing away a vote for the Lib-Dems in a seat were they are too far behind is one argument for proportional representation. Also the Lib-Dems lost a lot of trust with the coalition with the Tories, many left the Lib Dems as they felt betrayed by this.