I believe you replied to the wrong person. I never made that claim unless I am going crazy.

speedtest-cli has a lot to offer as a tool

What did you mean "works great" for then? Just that your cron job works?

The actual tool I was suggesting was what I was saying works great. speedtest-cli has a lot more options available to you that a simple wget does not have.

It provides cleaner information quicker. Yeah you could certainly setup a cron job using wget and have it do everything you want it too down to the bits it changes in memory... That just offers a quicker way to do all you may want too with that information.