"avoid the RMD on Roth401(k) is roll it to a Roth IRA,"

Sort of. That's why I noted opening a Roth and making one contribution, then letting it just sit idle, a great tool. There are a lot of qualifying terms, especially varying 5-year terms.

I like to use consumer-based articles.

https://www.schwab.com/resource-center/insights/content/can-you-rollover-roth-401k-to-roth-ira