Grin and bear it is the only option we have, non-compliance leads to grounding and a tea/biccies episode. We are required to provide all our own IT (compatible computer and internet connection). This also assists in the general dislike of the system. Admittedly two days tech refresher was probably a bit excessive, but IMHO I believe the pendulum has swung a bit far right of Ghengis in this case. The company invites those who are not equipped with the appropriate equipment (!) to come in on a day off and complete the CBT.
Back to your original question: Tech refresher is a vital part of recurrence, it just need to be done well where there is some sort of non-financial value calculation to make the bean counters rule the day to the exception of all else. The whole presentation of non quantifiable benefits to the bottom line in regard to lower insurance rates, accident free history is a difficult play for any training department when fighting for their slice of the budget.
I'd be happy to provide any further me pm if you wish.