A technical dive computer is explicitly stated in the original post as one designed to support technical dives, such as "Trimix, CCR, and Accelerated Decompression". A recreational dive computer may support some dives exceeding the universally acknowledged recreational limits of no decompression and 40m depth, but is not purpose-built for that. The question that is helpful is whether a technical computer serves as a good recreational computer, and I look forward to informed answers, rather than feigned clarification.
I think you are making universal assumptions about peoples understanding of these words being the same as yours, like the OP does.
I guess you think a technical dive is a deco dive. I can only guess though because apparently it is so obvious it goes without saying. However a lot of people would not call a simple back gas deco dive technical. But they would call a shallow no deco dive in a serious overhead technical.
All dive computers handle deco dives.
Is the Aqualung i300C a technical diving computer? Is the Suunto Vyper Novo? What are the differences between those and an entry level computer from the same brand other than being able to change gas to a richer mix for deco? So is a Zoop a technical dive computer?
Is being black with exposed hex bolts that matters?
Or is it the settings? Do they need extremely exotic settings to be technical? Ones which nobody can give a definitive answer on?
Or the price? By the time you get to a grand or so they all do CCR, trimix and so forth.
Really all computers are ‘technical’, some have more feature than others and that goes along with price. Want a nice bright colour screen and Bluetooth? Your getting a big price and so a bundle of unnecessary features. An extra feature might be to turn off half the features. Too many features can lead to long and tedious menu systems with extra ways to get the settings wrong. There is no chance of accidentally diving bailout CCR mode on a Zoop.
I think people should just buy a computer suitable for the diving they are doing or very likely to do real soon. They should look at what features are helpful to them (I am a huge fan of Bluetooth) but try not to overspend. Computers get lost, are expensive and you eventually need two if you are doing serious dives.
I suspect by ‘technical computer’ the OP simply means Shearwater (I own a couple of these).
Some, here and on FB, push all new divers to leap directly to a Perdix or Teric. The argument is often less about nice screens and more about future proofing. A similar argument might be used for people contemplating taking up deco diving. Just go directly to CCR and don’t waste time and money on OC. Really though there is a progression and doing a bit of serious diving first and learning what you require is important, the same goes for computers. If all you really need is to watch an NDL number in good light a single button Mares Puck will do (for the record I hate single button computers). For any sensible person that is all they will need for a couple of years. For the difference in price between a Mares Puck and a Teric I can buy a complete drysuit and undersuit. I am extremely interested in keeping divers diving. Who is more likely to carry on, a cold Teric owner or a warm Mares owner?
I quite often lend out computers. Generally a Zoop, rarely a Perdix (as I like to download the logs for myself) and in the past (until a student lost it) a HelO2. The students generally cope with whatever they are given for in the water use. It is the settings which are hard. Go to a shop, play with the computer, set it to 32% and back to air. How hard was that? Good or not?