Deceased Participant - RMD to Beneficiary

We have a participant who passed away in 2024. He has both Traditional and Roth balances in the 401(k) plan. In the past, he has been taking RMDs from the Roth source.

For 2024, which balance would we use for RMD calculation (just the 12/31/2023 Traditional Balance or 12/31/2023 Total Balance - that includes the Roth) and can the RMD for 2024 be distributed from the Roth source to the beneficiary? The reason I ask is because I know that for Roth IRAs, the RMDs are required after the person's death, but is that the case for deceased 401(k) participants with Roth balances?

According to this link from the IRS, it seems like only the Roth IRAs have RMDs for deceased participants: https://www.irs.gov/retirement-plans/retirement-plan-and-ira-required-minimum-distributions-faqs#:~:text=Roth IRAs do not require,required from designated Roth accounts.

In my opinion, only the participant's 12/31/2023 Traditional Balance would be considered for RMD calculations and the RMD must be taken from the Traditional source. Would you agree?