Well it makes sense that it would raise some suspicion, but at the same time I know a handful of devout Muslims and Jews who don’t really worry so much about obeying dietary rules. It’s no different than any other outmoded rule in other religions. I mean, look at Christianity. The majority of people who get wary of other Christians for not following the rules of the religion tend to be among the worst adherents of the faith. Hell, most American politicians identify as Christians while simultaneously acting in the exact opposite way their faith dictates they should, and that pattern is far from exclusive to their station. It’s not just little accessory rules either, they make exceptions to big ones like reserving judgment of others for their god, all of the ten commandments, and turning the other cheek.
A yuuuge example: Donald Trump identifies as a Christian, and harps on it to curry favor with his base. The Venn diagram of commonalities between Trump and Jesus is just two circles spaced far apart from each other. You might think, “well, they’re both mammalian male carbon-based life forms” but if you’re a Christian and believe that Jesus was also divine, you can’t take any of those things for granted…