Quote from that article that we should all take note of (including me 
)
That is, don’t be so quick to write off something as being bloated simply because it doesn’t align with whatever philosophy, vision, or decision that you personally have for a project. Just because something includes an option (or set of options) that you don’t use doesn’t mean it’s generally bloated.
Being overkill for your needs is not the same as thing as being bloated.
and I go back to what I said about user experience. If a developer is avoiding bootstrap because they claim its bloated, yet the website they developed is slow loading due to other resources, surely they need to re-think their approach to building websites for their visitors.