Actually...... it's highly recommend.
By most anyone that does a lot of tanks. ADA uses them on larger tanks, his giant tank has them.

I have them.

CO2 is easy to add, you just add a bit more than without surface movement.
The real benefit is the exchange of O2 and better mixing.

I like lots of current and mixing, it's good for plants and reduces algae. There's a lot of evidence of that both in FW and marine systems.

It helps exchange nutrients as well as CO2.

In most cases, like yourself, folks reduce their surface movement and flow down too low. Their fish gasp.
Many blame the CO2.

It's mostly the low O2.

If the plants are growing well, that can off set that*(but only during the day, earyl am, they gasp), if you have few fish, that also can off set that.

If you have good surface movement, etc, then you lose some CO2, so what, it's cheap and you just turn the needle valve a 1/16" of a turn etc.

That way there is plenty of O2 and CO2 and the tank is well mixed, the CO2 is not allowed to build up as much this way and the O2 is not allowed to get too low.

So it's a mix of 3 things really, not enough plant growth/low O2(both plant growth and surface exchange) and too much CO2.

I've found it easier to maintain a stable level of CO2 ina high flow tank, less fish issues and better long term results.

Some folks enjoy suggesting surface movement is bad.
That's rubbish.

You can go over board and make it a torrent, but some slight rippling is fine.
Or if the degassing exceeds the CO2 diffusion system's capacity (that is often what happens and folks complain they cannot get enough CO2 into their tank etc)

When you use a skimmer and over box, and a wet dry etc, you should raise the level in the weir box to about 2-4" drop only.
No more.

The wet/dry bioball tower needs duct taped up so no air exchages in there.
That solves about 95% of any issue.

Regards,
Tom Barr