That's all MK1 characters are designed to do HTB or bust.
In MKXL characters had more to them outside of mix-ups and that's what's missing in Mk1 which makes it boring to watch.
Uhm... plenty of characters are entirely NOT dependent on HTB's in MK1. I'd say the only ones who ARE are Mileena-Lao, Sindel-Lao/Tremor, Cyrax and Homelander/Tremor.
The rest of the cast either depends on (oh, the irony!) 50/50s to open people up (Reptile, Nitara, Smoke, Havik, Baraka, Ghostface, Scorpion-Ferra, Quan Chi, Sub-Zero), pressure (Johnny, Ermac, Liu Kang, Shao, Omni-man) or spacing and whiff punishing (Ashrah, Homelander without Tremor, Geras, Li Mei, Takeda, Tanya, Kenshi). There are also characters that can zone AND either whiff punish very well or pressure well (Sindel, Kitana, Reiko, Sektor).
All of that can also completely change if you pair different Kameos with the characters. I don't see how
this makes it less creative than MKX - which, again, I am a fan of.
EDIT: Also friendly reminder that we also had HTBs in MKX with Quan Chi, Cyber Sub, Takeda, Alien and Tremor, and back then we didn't have MK1's system of "autoblock when overhead and low hit on the same frame window", which made them, well,
harder to blockables lol.