Eh, not really. Minority religions can be much easier to accommodate than majorities. If I have a business with 100 employees that I want to keep open 24/7, it’s going to be a lot easier to find someone to cover the Saturday shift in place of the one Jew than to find someone to cover the Sunday shift in place of the 99 Christians.
What strikes me about this Supreme Court decision is that it doesn’t really settle anything (and in fact, unsettles a lot). We’ve now had a whole bunch of cases on just what is or isn’t a de minimus accommodation. If a company isn’t sure what they need to do, they can ask their legal team “Is this accommodation de minimus?”, and their legal team can look through all that case law and compare it to the various cases, and come up with a confident answer. But with a new standard, now we have to go through the whole process again, for many, many cases, to decide whether any given accommodation counts as “undue hardship”. Heck, it might even be weaker, in some regards: Whether a hardship is “due” is not necessarily related to whether it’s “minimal”.