Ubuntu - It was my first distro and I loved it for many years after 6.06. However, it slowly shifted from a very community focused distro ("Linux for human beings" was the original slogan) to a very corporate distro with lots of in-house bullshit, CLAs, and partially-closed projects that seems to focus on profit and business over actual human beings. I correlate this move to around the time when it became purple rather than brown. Snap sucks, Mir sucks, Unity sucks, integrating Amazon and music store paid bullshit sucks. Just no. Move to Debian.
Manjaro - It's Arch, but with incompetence!
Red Hat - Do you enjoy paying licensing fees for a Linux distro that very likely violates the open source licenses it uses? RHEL is for you! Just remember not to share the code! Sharing is most certainly NOT caring!
How does Manjaro add incompetence? I've not used either for a while, buy Manjaro never failed me, while arch did manage to make my system nuke itself a couple times just running pacman -Syyu. Granted, this was a long time ago, but it's the only distro to so this to me ever.
The project maintainers repeatedly forget to renew their certificates, causing package upgrades to fail.
The project maintainers, in multiple past instances, have misconfigured their package manager resulting in essentially a DDoS of the AUR.
The packages are out of date vs. the upstream Arch ones, which often causes AUR packages intended for upstream Arch to break on Manjaro. Yet they consider the AUR a supported resource.
Project has had problems with mismanagement of funds in the past.
Despite all this, they seem to heavily focus on marketing, merch, and trying to sell preinstalled systems. Manjaro is in it for profit, not to make an awesome distro.
did they ever start backporting security patches? I know that was a major issue in the early days that really soured me on the competence of the project. you cannot take a rolling release distro, bless some package versions as "stable" and call it a day.
it's a reddit imported hate-train because they didn't renew certificates twice in twenty years and a bug in pamac cause the aur to be ddosed for a few hours total, to tell you how much of an empty bandwagon it is, few years back, manjaro tried to push a closed source office suite in their base installers and none of the clowns parroting anti-manjaro mantras ever mention it, they didn't think about adding it to the agreed list of accusations in the early days so their copy pasted opinions don't feature it.
If that were true then none of this would be news. The CentOS Stream code is available to the public on git, but not the RHEL code. If the RHEL code was available to the public the outrage would have no reason to exist.
Even if paying customers have access to the RHEL code via git, they are forbidden from redistributing it (which is allowed by the FOSS licenses that code is under) or else the customers lose their license. This does not qualify as the code being available in my opinion, and in the opinion of the vast majority of the FOSS community.
Saying everything is fine and dandy in the RHEL world is FUD.