Yes and I will tell you why..If they have a doctrinal "problem" with one or more of the points they have the option of other churches that better reflect their beliefs..Doctrine is very important to "observant" Protestants .Yes there are Sunday and holiday Protestants just as their are Catholics..But by and large they select their "Sunday" church with care ..
Well that's just it!!!! That's why there are so many Protestant denominations!! So you just admitted that there is ENOUGH difference in docterine to merit denomination jumping or founding. Whereas Catholics think there is more to church planting than a leasing a store front because you have a "problem" with a church docterine.