Acceptable? Not sure...I’d be annoyed though! They will be able to resole them for you, but I think the refurb costs are £110. Might be worth a polite email to them, their customer service is pretty good, you never know they might discount the rate. My tweed Cs also need refurbishment, the problem I have with all my boots is I wear the leather on the inside of the heel!
Edit: the interior of the commando sole looks very worn down - what have you been doing in them?!
Edit 2: from the photo in the other thread the commando sole looks completely knackered...you must have done some serious miles in them! I suspect it’s just time for a refurbishment....