Every sevt of the Christian faith interprets the biblical texts in their own way. You do point out two if the more aggressive sects as far as soul winning goes, but there are many others that also go out cold calling.
Regardless, they are considered part of the Christian Churches, just like the Catholics, the Episcopalians, the Pentacistals, and the Seventh Day Adventists.
Nobody ever said beingba Christian was easy. The hardest part is not the criticism from non-believers, but the inability to not judge others. I know you would like to see everyone in heaven, but that is not to be. Many may discover that they fell short for not putting it in the hands of their God. If you believe you have won one soul to the path of righteousness and God, you are mistaken. At best, you are no more than an instrument for the creators use. No car was ever repaired with on socket alone. It took a ratchet, some Wrenches, some screwdrivers and more. Then it took a mechanic that knew what he was doing. Accept that you are his socket, and do the work intended, but remember, sometimes a bolt needs cut off or torched. It's not the sockets fault.