> balance

This is a funny word if you think about it. It's the property where several forces on a point are in equilibrium. This definition generalises to very abstract situations, and especially to political ones. Several sides are all pulling (or pushing... the metaphor doesn't really matter) in their own direction and where the final decision falls is where the powers are in equilibrium. It's the point which is as dissatisfactory for every party as that party is powerless. Sometimes, that's what you want.

Often, balance evokes the image of the halfway point. The balance between killing every Jewish baby and no Jewish baby is not killing half of all newborns. It's also not killing exactly zero babies. If you want a balance between killing all Jewish babies and no Jewish babies, the neo-nazis all have a saying and you end up having to kill one of every hundred million or so babies. Which is unacceptable. This example was an extremist straw-man to illustrate the following point: You're not looking for balance, you're looking to maximise a utility function.

The utility function may be maximised by looking for balance between forces, in fact it often is, or we approach something close to the maximum by finding the balance. However, you mustn't mistake the balance for the utility function. You're not maximising balance. You're looking for a solution to a problem. You want less javascript client frameworks? Ok. You still want some javascript client frameworks? Ok. Why.

Because you want to maximise the utility of javascript client frameworks (I assume). This utility might be different for different people, i.e. they may want to do different things with the frameworks, etc. But, I can agree with you that having a constant stream of new ones serves no utility, except the tautological one of "let's have as many frameworks as we can write".

Now we come back to balance. At some rate of new frameworks being made, we balance out the amount of work spent on maintenance of the old ones with the influx of new ideas that make our work and life easier and from time to time we completely overhaul and forget an old technology. Which, in turn, maximises our utility of these frameworks. It does look like balance <=> utility, but not quite. This is a balance in the context of a specific utility function. You've defined the utility function as "I want X and Y with preference weights α and β", which looks very much like a linear programming[1] problem, the solution to which is... weighted balance.

Others would not agree to your utility function. They maybe don't want new ideas so much. Now you're balancing utility functions. But those people still agree that they want to "find the balance". It's just that their equilibrium is not your equilibrium.

So, please don't just throw out "there's balance" like that. Everyone can agree to balance and it's at a different point for different people. It's a word that causes... well, muddled thinking. If you can, avoid using it at all[2]. Get to the root of your problem as much as you can, then say what ails you. "I like seeing new approaches tried, but it's hard to keep up with the influx of largely samey ones that are constantly cropping up. I wish they would slow down." -- or something along these lines, I'm not saying this is what you specifically want.

Sorry for the long rant. I've had to listen to people wanting to balance a lot lately.

[1] https://en.wikipedia.org/wiki/Linear_programming a type of math problem concerned with finding the point where the given variables all satisfy a set of constraints expressed as linear inequalities and a given function achieves a maximum.
[2] maybe there is a balance to abusing "balance"...