How safe is Dual booting Windows 10 and macOS?

So I just finished preparing bootable OC and want to dual boot on my windows drive without erasing data. The windows drive is GPT formatted and I am ready to install macOS but This video has discouraged me from doing so. My laptop has only one drive slot so can't have separate storage for both OS's. Is there any work around?

submitted by /u/losbravos21
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