No, they can insist on being given whatever books & records exist, in whatever format they exist. I'd say there's crossed wires there - most people with a business of any kind of size will use excel or bookkeeping software to prepare their books, so the tax official will want the soft copy of such a record, rather than a printout.
I'm in no way suggesting no Revenue officer has ever been mean or intimidating to a taxpayer, but I'm very conscious that we only have one part of a story here.
I'm not getting you in relation to a record versus a printout. For example I put all my rental records in excel, and then in my paper file I have my receipts and my bank statements and that's it. I'd have to show that if asked by revenue, but I woudn't have to put it into a different format to suit them. The poster here seems to put all his records into paper accountancy books but was asked to put them into excel. Apparently.
Agreed we've only one side of the story, but I've negotiated with high handed revenue officials back in the day and I've had relations take them on etc. There is a world of difference explaining your rights to disclose versus threatening and intimidating and some officials do take it too far.