this is the way 🐸
bitcoin in a pension or retirement account is an IOU.
the companies selling these services do not give full disclosure. if the argument is "hold bitcoin in retirement account, it is tax deferred" they neglect to say bitcoin is tax deferred by default.
follow me here.
you buy bitcoin by default and hodl, it grows tax deferred. you only pay tax when you sell to spend, at a preferred capital gain rate, on demand.
vs
you instruct a custodian to buy bitcoin in your retirement account, it grows tax deferred. you pay tax when you sell to spend at a non preferred higher "income" rate. also, you have a counterparty risk. also, you have freedom money inside a govt program.