Uh, you left off the "IMO" - which is all that is.
Catholics who cling to their roots, as well as Orthodox Christians hold that the liturgical acts (including foot washing) a "re-presentations" of the original.
These turn our minds out of the "here and now" to the "as it always has been."
For 2,000 years, only men got their feet washed. Now, someone has a better idea?
Actually the washing of the feet had fallen into disuse for some 400 years, until Pius XII reintroduced it, in 1955.