While a cool experiment. I don't understand why you'd use this on a RPi unless your poor-man's server was already the RPi. Isn't that the beauty of this device is it's a router/firewall on a board that takes up 0-U space?

Normally I don't reply for self-evident answers but the sad sibling's comments make me reply anyway.

RPi is not originally made for industry usages but there are currently many industry that use it for prototyping and even inside real world implementations due to the existing eco-systems for examples drivers, software, and hardware (daughterboards, hats, etc).

In my case I have designed Linux based network training kit with open source software like Quagga and LiSA (Linux switching appliance). It always good to use widely supported hardware like Rasberry Pi, and this Mikrotik NIC is good for data forwarding plane and network acceleration with potential extras like in-network computing and edge processing similar to SmartNIC and Data Processing Unit (DPU).

Apart from training we also have collaborations with China and Australia Radio Astronomy groups and one of the interesting part is to perform e-VLBI. It is nice to have a device in one small appliance (RPi + accelerator) in the remote observatories that cost less than USD300 with much lower power consumption rather than a full blown Xeon based server with accelerator.

Because Broadcom pays people to spam internet forums with their Raspberry Pi brand.

Incessantly.