The listed specifications do not explicitly list USB PD; of itself, as a fundamental indication of compatibility, this might be interpreted as an indication of concern…
Your iPad is an expensive device; do you really want to risk using a relatively cheap non-OEM power source - of dubious specification - that may damage your iPad?
As previously outlined, the higher wattage is not something to worry about. Your iPad will only draw the current that it needs. What does matter is full compliance with the the USB PD (Power Delivery) protocol - that actively negotiates the power profile (voltage and current) that will be used to charge the iPad. Unless fully compliant, there is a risk of damage to your iPad.
If you damage your iPad through use of a non-compliant power source, your warranty will not cover damage.
Ultimately, it is your choice - and the risk is entirely yours.