Honestly, all Hashi products are generally really good. I do think they do suffer from moving too fast syndrome. They pushed to go public and most or all of their recent shortcomings can be traced back to trying to push stock prices.
Early Hashicorp was incredible. They were open source stewards and looked like an up-and-coming Redhat or Canonical. Their products were ground-breaking and truly huge value adds to the open-source eco system. But they got extremely popular (mostly thanks to Terraform, which took off and drew more attention to their other products).
But since going public it has been clear that they are trying to get money and enterprise customers at any cost.
Terraform itself has felt like it was in maintenance-mode since hitting version 1. Terraform providers frequently break. For production I have found you need to pin providers down to the patch level, because i've had multiple problems just in small patch-level updates over the recent years. They famously started rejecting any open-source contributions that didn't provide a business value for Hashicorp. Since TF hitting v1, almost all the attention seems to be towards Terraform Cloud and Terraform Enterprise. At Hashicon, it feels like every talk is just propaganda pushing these products. It is all they care about anymore.
Nomad was a product that Hashicorp was very excited about for a while and then they seemed to just abandon on the side of the road in their quest for enterprise dominance (probably after learning that most Enterprises are all-in on K8s and Nomad is more beneficial to fast-moving start-ups).
Vault was an incredible tool, especially in the Open-Source space. But in the past few years they have really split the open-source and licensed versions of Vault significantly which made the open-source version feel more like a burden to Hashicorp. The last time I talked to Hashicorp about Vault (we were deeply considering a switch to Vault at work last year), they treated the open-source self-hosted solution as a "trial" of the real Vault, and that is what it felt like. Almost everything we ran into during setup, they would respond back with "oh that's fine in the enterprise version".
Overall, they have peeled back on all but the absolute minimum efforts required to support their open source versions of products and have been an entirely enterprise focused company for a while. And I can't blame them, sure you need to make money. But I can't help but point to organizations like RedHat and Canonical as examples of what Hashicorp could have been.
At this point I feel like the parent that watches their kids, talking about how they missed out on reaching their potential, thanks mostly to what seems like greed or over-ambition. "I'm not mad, I'm just disappointed" comes to mind when I think of Hashi. I have high-hopes for OpenTofu to fill the Terraform void. I've moved past Vault and am using one of the big hyperscalers' secrets management tools (which I enjoy a lot less, but is cheaper and less complicated). I use kubernetes instead of Nomad, which again is fine, it has become the standard anyway. So i'll be just fine... but I'm dissapointed at you Hashicorp. That's all.