Now that I've read the source material in full and with care, I think that my characterization of the implications of these new rules might be in error, or at least over-stated, as apparently the language changes pertain to specific clauses in the House Code of Official Conduct, which can be seen here:

https://ethics.house.gov/publications/code-official-conduct#:~:text=Rule%20XXIII%20%2D%20Code%20Of%20Official%20Conduct&text=A%20Member%2C%20Delegate%2C%20Resident%20Commissioner,reflect%20creditably%20on%20the%20House.

On the other hand, there is worrying phrasing at the start of this bill, which suggests that these changes in the Code of Ethics are just the foot it the door to sweeping changes in other, broader contexts. The very first line of the bill says:

Adopting the Rules of the House of Representatives for the One Hundred Seventeenth Congress, and for other purposes.

Not to sound paranoid, but given everything that's been going on in recent years, I do suspect that this is the first step in the larger, longer-range agenda of making it impossible to identify, discuss and legislatively prohibit sexism and sex discrimination by making it verboten to acknowledge and specify sex.