No they aren't. At least not objectively. Bad for your subjective criterion comparison? Sure.
that's not what "objective" means. you can't look at an objective evaluation of something and go "well, you chose the criterion, so it's not objective". of course you have to start with selecting the criterion - what makes an evaluation objective or not is how you go about examining that criteria (namely, whether or not you set aside your biases when doing so and simply look at what the thing is).
at most, you could argue that people should specify what criteria they're making an evaluation with, and sure, there's definitely no problem in wanting to know that. but arguing what is or is not objective from a faulty definition of objectivity isn't helpful.
You can personally view them as bad for whatever you are choosing to compare them over. What you can't do, though, is make them a bad choice for me compared to any option. You simply do not have that ability.
i mean, sure, i guess we don't have that ability. the actual mechanics do, though (and i guess by extension your DM, since they can change those).
The ability to heal is good stuff. Expertise in persuasion is awesome. Go go gadget fighter social! Giving extra attacks when I action surge is pretty good. Granting indomitable to an ally is also good.
interesting that you didn't even attempt to defend the battlerager (and, no, i'm not going to attack your assessment of the banneret, because i don't really care - someone else can do that if they really want to).
You don't get to tell me that those are worse for me than any other subclass choice.
i mean, we definitely
can. not only do we have the freedom to do that, but people are generally capable of at least attempting to evaluate if one option is better or worse for another person to take.