Yes, from Chalkychap way back in March 2023 :
”If you've got an unlimited data allowance, a word of warning about using mobile broadband on a permanent basis - section 5.15 & 5.16 of SMARTY's terms & conditions state:
...
This SIM card should not be used as a permanent long-term alternative to home broadband. If we determine in our sole opinion that your use of the SMARTY Services is in breach of these Terms and/or exceeds that reasonably expected of someone using the Service for legitimate personal, noncommercial use, then we may at our discretion terminate (in accordance with Section 9), or Suspend (in accordance with Section 8), or restrict your SMARTY Service. As an example, without limitation, we consider that if you regularly tether more than 8 devices that this is unlikely to be legitimate personal, non-commercial use.”
I know I am stating the obvious, but Smarty Mobile is a MOBILE PHONE service, not a cheap long term alternative to fixed line / fibre briadband.