OIDC is always preferred if possible. At this time in history not all projects have OIDC support, though some can be extended via an extension or plugin to accomplish the goal. I’ve got enough experience to help projects get over this hurdle and get OIDC working. If I could be paid just to help out open source projects I might go for it.
Here’s a pull request for a taiga helm chart I’ve been using. I’ve been using taiga for years via docker and am happy to be able to help out in this way now that I’m using kubernetes and helm charts. In this case a borrowed a technique from a nextcloud helm chart and works perfectly for this taiga helm chart: https://github.com/nemonik/taiga-helm/pull/6