All aircraft I have flown for the last 20 years have FMS and fly a ground track - not constant angle of bank.
Really? The in the jets I have flown the FMS flys over the holding fixed then rate one outbound, the "width" of the hold being determined by wind effect. Then the outbound leg is determined either by time or leg length in the FMS, the inbound turn varies with wind but not over rate one so can lead to an overshoot and re intercept of the inbound. Admittedly the better ones do vary heading outbound to allow for wind effect to intercept inbound cleanly, therefore not tracking parallel.
None of this made one bit of difference to the viability of airflow over the wing, even with 100 knot crosswind.