If your technicians always have dependable Wi-Fi or a managed hotspot, this idea becomes much easier to defend. If they are expected to work from airports, rental cars, customer warehouses, or hotels with captive portals, connectivity may be the compromise that matters most.
The keyboard is getting most of the attention, but a support machine can survive mediocre typing more easily than an unreliable network path. Ticket notes can wait a few minutes. An emergency console session usually cannot. Unless the shipping version has a solid cellular option, every technician will be depending on phone tethering or carrying another hotspot. That means another battery to monitor, another data plan to manage, and another device that may decide to update or disconnect at the wrong moment. The compact form factor stops being convenient when the user has the handheld in one hand and a phone balanced nearby just to stay online.
I would judge the Acer DualPlay Mini less as a miniature laptop and more as an incident-response terminal. Can it wake quickly, connect without drama, run your VPN and authentication tools, and stay usable while tethered for an extended session? Can the technician charge it from the same USB-C power bank used for everything else? Does it recover cleanly after switching between hotel Wi-Fi, a phone hotspot, and a client guest network? Those mundane transitions expose weak drivers and power-management problems faster than gaming benchmarks do.
There is a setup where it could make sense for a small team. Give each person a conventional machine as their normal workstation, then keep one compact unit configured as a ready spare for short trips or emergency callouts. Load it with the approved remote-access client, documentation, recovery keys, serial-console software, and offline copies of the procedures people need when the network is partly down. In that role, the small keyboard matters less because nobody is pretending it will handle a full workday. It just needs to get someone through the first hour of an incident.
I would not share a single unit casually between employees, though. A travel support device tends to accumulate certificates, MFA registrations, VPN profiles, customer credentials, and cached data. Constantly handing it around either creates an access-control mess or forces the team to spend time resetting and reprovisioning it. Assigned ownership, even for a secondary device, makes auditing and authentication much cleaner.
So my answer depends on the job assigned to it. As a primary travel computer, the compromises pile up quickly. As a tightly managed emergency terminal with dependable connectivity, it could earn its space without needing to replace a proper laptop.