Yes, unfortunately Houdini does feel pre-2000s era in this sector. Houdini lacks an exhaustive weights editor, some of the tools are confusing and/or don't produce reliable and repeatable results. Mirror Capture SOP for example, is a mess in this regard and also it's very confusing in its documentation, for mea at least - none of the listed modes in the Behavior list, docs explanations or behavior in the viewport, make practical sense to me. The approach of "from" and "to" lists of bones/deformers has less interactivity than a command line. So we're pre-1980s here. The only better thing in Houdini vs XSI (again, a defunct software that had this nailed since at least 15 yrs ago) is its initial capture result with its biharmonic solution.
And there are other problems related to character animation work, which I mentioned with other occasions and won't do it again here.