Why do I need the Deluxe version for HSA when it has no impact on tax amount?

Information about a HSA goes on Schedule 1, which is not supported by the Free Edition.   The Free Edition can only be used for very simple Form 1040 returns that do not require the use of extra forms or schedules.

Or—-Use this IRS site for other ways to file for free.  There are 8  free software versions available from the IRS Free File site

https://apps.irs.gov/app/freeFile/

Or—if you live in certain states you may be eligible to use the new IRS Direct File

In Filing Season 2025, Direct File will be available in Alaska, Arizona, California, Connecticut, Florida, Idaho, Kansas, Maine, Maryland, Massachusetts, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Oregon, Pennsylvania, South Dakota, Tennessee, Texas, Washington, Wisconsin, and Wyoming. 

https://directfile.irs.gov/

https://home.treasury.gov/news/press-releases/jy2629