I think it's really deeper than that. Liberal/leftists don't tolerate or ignore such immoral character flaws, they REVERE them. Sexual perversion and exploitation are part and parcel of their cult beliefs, and maybe even the foundation. Their fixation on subjective morality - with their own selfish desires as the hub of their "universe" stems (IMHO) of their rejection and envy of the Supreme Author of the universe.
Even though some of them profess to believe in God, they reject all traditional and absolute standards of right and wrong (except the ones they make up themselves to control others). They try to claim that sexual immorality is not immoral and has no bearing on "public life". I aver the opposite - a man (or woman) who not only indulges repeatedly in sexual immorality but preaches and promotes it is therefore 100% untrustworthy in the rest of their life.