The plugin does not escape anything when importing the files. single quotes (or apostrophes) do not need to be escaped. Double quotes inside of an entry could be an issue (“this is an “entry” with a quote”,”this is another without one”), but the code should work anyway although I have not tested. You are likely having the same issue as the majority of the users who have posted in the support area, you are not correctly creating your csv file before importing.
I advised the other user you are referring to, to replace the apostrophes with the ACII { & #39; (without the space) }, not the other way around.
So, check your method of creating the csv, replace the apostrophes with the ACII representation, and make sure your file is utf8 encoded. The plugin works fine, it is not an issue with the plugin, but an issue with either the way you are setting up or encoding your csv file, and/or an issue with data results to/from php and MySQL where the quotes are getting escaped.
Still, if you feel the plugin is not useable, don’t use it. Do not get upset with plugin developers for putting out free code, and offering support on top of that. Get upset with yourself for not knowing enough to work with and resolve issues on your own, or at least look and ask for help or answers without getting frustrated and blaming everyone else.