Many Tesla owners could put a CCS adapter to good use. There's no public information about if or when it could be coming to North America. Many threads already exist on the topic. Here's a good one:
CCS Adapter for North America
If they release an adapter for the CCS Type 1 plugs in NA, it's likely to be similar to the
CCS Type 2 adapter available in Europe for Model S/X. This adapter is capable of about 400A, likely constrained by the fact that it's not liquid cooled. It
has been shown to provide 130 kW charging power. Optimistically, it might be capable of a little more (150 kW?) but it will be thermally limited, again due to lack of active cooling.
The "350kW" EA stations are limited to 500A and can only charge a 400V battery at less than 200 kW. If Tesla somehow designed an CCS1 adapter that allowed a 500A charge current, to max out the capability of the EA stations, the charging would be similar to EU Model 3's that have CCS2 built-in and charge as shown below.
Reference:
V3 Supercharging Profiles for Model 3
And recognize that the cables that provide that 500A from the EA stations are liquid cooled.
So to reiterate, a notional, uncooled CCS1 adapter is likely going to be capable of less than 150 kW and may be particularly sensitive to overheating at those power levels. It will certainly be useful, but slower than an unshared V2 Supercharger stall.