They know this won't be allowed too, hence why it's virtue signalling without much risk
Equipment must not have any political, religious or personal slogans, statements or images. Players must not reveal undergarments that show political, religious, personal slogans, statements or images, or advertising other than the manufacturer's logo.
For a detailed account of how placing the LGBT rainbow on the kit violates almost every aspect of the Laws' definition of "political," see pages 4-10 in the 2019 report, "Let All Play: Yes to Soccer, No to Politics." CLICK to read the report.
They know this won't be allowed too, hence why it's virtue signalling without much risk