All Autodesk software is now subscription licensed.
How you feel depends on how much the particular software costs.
I honestly prefer to pay one price, and upgrade if and when I want.
But subscription can allow you to use software that you otherwise couldn't afford.
If you consider that Aspire is $2000 plus $400 to upgrade every 2-3 years, ArtCAM is less expensive for the first 7-8 years that you use it.