Mod. and others, I meant something along Syag’s lines. When interpreting divrei Chazal and putting them together there can be different interpretations and/or how far and in which way you take things. Reb Yisroel Salanter said that someone who has bad middos is a gangster, and someone with bad middos who has the Torah is a gangster with a gun! What he meant was (in my understanding) that if someone who has bad middos will interpet things in a wrong way which either hurt people (where the Torah did not mean to) or allow things which should not be muttar etc.
Btw, dear Yekke2, the problem you pointed out exists not only by the left-leaning people, it exists also by the right-leaning ones – just, obviously, in other areas or in other ways.