If your idea of IoT is a rpi with 4Gb of RAM connected to a power supply running Linux, then yes, just import the library. But my of idea of IoT is something that runs runs on a battery for a year, and in that case it's unlikely to have enough hardware to support QUIC (or it's main user, http3). QUIC needs too much RAM (min 4KB), too much flash (min 64Kb for the code), and too much CPU. In reality it's a squeeze even on a nRF52840.
If your idea of IoT is a rpi with 4Gb of RAM connected to a power supply running Linux, then yes, just import the library. But my of idea of IoT is something that runs runs on a battery for a year, and in that case it's unlikely to have enough hardware to support QUIC (or it's main user, http3). QUIC needs too much RAM (min 4KB), too much flash (min 64Kb for the code), and too much CPU. In reality it's a squeeze even on a nRF52840.