There are some big company out there discouraging people to enter in mining because they don't want to difficulty increase. So I'm agree with OP.
Look at the Developers on FPGA they don't tell which coin and which bitstream you should use in order to make a good profit with FPGA and I heard there are company that making large amount of profit with FPGA which no one giving leak about this.
I don't know if its true but some youtuber that they have contact from some private company who develop FPGA for mining.

If you are just go in GPU the other comments here is true because here in my country mining is not profitable if you don't have free electricity source.