When people make external sanctimonious displays of false religiosity, I’m put off. I’m impressed when I see people making a kiddush hashem, treating their parents with respect, helping the poor, loving their neighbors, etc. Wearing the nicest hat with the broadest brim, the snazziest suit, drying off lettuce leaves at the seder table, and many other chumrot we see, I think, reflects a lack of learning. When people’s stringencies reflect a sicnere parsing of halakhic literature, I respect such individuals.
OTOH, I’m often ridiculed for what people perceive to be eccentricities (i.e. I am now makpid on yashan and bishul yisrael, thus limiting my ability to eat in 99% of kasher restaurants, I only wash on breads that are bread-like and not cake-like, I only use yayin eino mevushal for kiddush, I don’t carry in string eruvin, I don’t accept payment for teaching torah, I wouldn’t want my wife to wear a wig, etc., all of which are based generally on the Rambam). Therefore, I’m sensitive to people’s religious practices in most cases.