No evidence given. According to a poll by the International Republican Institute, in October 2017 49 % of Moldovans preferred to join the European Union, 38 % the Customs Union/Eurasian Union (answering a question "If Moldova could only join one international economic union, which one should it be?).
The Deep and Comprehensive Free Trade Area (DCFTA) is compatible with all other free trade agreements that Moldova is part of, and does not limit Moldova's ability to export its products to other countries. Moldova also retains full sovereignty over its trade policy since it is not a member of any customs union. eeas.europa.eu/headquarters/headquarters-homepage_en/4011/EU-Moldova%20relations,%20Factsheet,