Correct. I'm on an older titanium freehub body as the big ass 51-10 cassette gouged out the stock and alu replacements freehubs body and i couldn't be bothered to file it down. IMO its a piece of mind for 30-40€ during sales.
Thinking about it, I used to have problems with the aluminum HG cassette hubs becoming gouged. When I switched over to Micro Spline, I have had no issues with gouges in the splines. Over the past 4 years, all of my bikes run Micro Spline freehubs. The unibody cassettes fit onto the splines very securely and distribute the loads across the splines, versus the old HG design. Many of my bikes run a 32T or 30T chainring in front, with either 10-50 or 10-52 MS cassettes.
You must be running MS or XD/R if you have a 10T highest cog on back. Therefore, why are you gouging the splines on the hub?