are you sure? i don’t mean this component, i mean the native onebox using a twitter developer free plan api token and with this component disabled. you say you are being hosted - they should be able to set up the default oneboxing like that exists here on Meta.
i have the rich x/twitter embedding for free on 2 different self hosted sites. i use this component when the x/twitter api breaks for whatever reason and just toggle it on and off as needed then.