Why is support for text and float variables restricted?

[BobSegrest]

I noticed in the documentation that support for text and float variables are is restricted to the Arduino Mega and ESP8266 boards...

 "Float and String variables are also supported, but only by the Arduino Mega board & by the ESP8266."

I am using a Teensy 4.1 board ( https://www.pjrc.com/store/teensy41.html ) with it's integrated Ethernet interface.

Is there some reason this board can't support text and float variables?
Is there any way to make this work?

Bob Segrest
KO2F