You are really arguing against the term itself.
There are laws in place to protect minorities. Using the term Islamophobia in law goes against reason.
No one is interested in 'nice' Muslims. The issue is with those who use violence to push the Islamist death cult dogma. There are a significant number of them here and a significant number of silent supporters among other Muslims.
Beyond that, this is a Christian/secular country. Seeing the spread of Islam as a threat to that and the future of British culture is neither irrational, unreasonable, nor unrealistic.
This is literally what you’re doing!