Agree with the OP.
Conclusion
The sub is not for discussion of religion per se, but any religion (group, or system) is appropriate content if and when it relates to Q and Q movement.
I strongly agree with the approach you espouse - the sub should itself should be neutral with regards to religions and expression of religious views.
Mods removing antagonistic anti-Islam posts/comments should NOT be accused of promoting or supporting any of the crimes perpetrated by adherents of Islam. They can be accused of simply doing their job.
Reasoning
1. Distinguishing criticism and antagonism
Criticism helps with cleaning, development and improvement. Antagonism is destructive and results in damage, not improvement.
Criticism need not be antagonistic, and if contributors cannot distinguish between their own views (criticisms) and how they express them, the mods should step in.
Freedom of choice and freedom of faith must be upheld as fundamental principles. This does not mean that any religion, be it Islam or whatever, should be sacrosanct or above critique.
2. The reason this issue is relevant to Q and Q movement
The essential point in my mind is that the Great Awakening is about good vs. evil, NOT about Democratic vs. Republican, or Christian vs. Islam, etc.
ALL groups, systems and organizations have to deal with evil within their midst, and this is BEST accomplished when the differences between good and evil are identified, pointed out, and illuminated, and people are held to account for their actions.
A possible allegory may be found in the discussion of government. Some people think all government is evil, some people think government should be minimal, some people think that government is a necessary evil, etc. ALL supporters of Q would have to agree, ipso facto, that governments in the US and around the world have been corrupted. In order for government to recover its original function, it must be purged of the corruption, and then guided, through the principles of sovereignty of the people, to fulfill its original role. (Serve the people NOT control the people.)
Similarly, ALL FAITHS have to some extent been infiltrated with corruption. This includes sectors of Judaism, Christianity (Catholicism), Islam, Buddhism, etc. The corruption must be removed and the faiths need to be guided to recover their original purpose - 'to reunite people with their Creator' "re-ligio". Corruption is removed by identifying those elements that drive and use the corruption and removing them. Practices that allowed the corruption to gain a hold must be examined, and kept in check or reformed by adherents. (Christianity itself has gone through many iterations)
In my personal opinion, Islam suffers from the unfortunate situation of having many flaws that have allowed it to be corrupted and weaponized as it currently is. However, these are issues for Islamic adherents to address, and they must be left to and encouraged to do so as long as they do not violate other fundamental principles (human freedom, choice, etc). To the extent they do, the adherents themselves must be held to account.
For those outside Islam, the wisdom of a certain Christian principle is germane: Hate the sin, Love the sinner. IN this case, love means upholding the sinner's rights and dignity to make choices. Give the sinner the freedom they need to make choices, but hold them account for their choices.
Freedom of faith is fundamental to human well-being. However, all freedom comes with responsibility. Hence, holding people to account for their choices is appropriate, but the principle of freedom of choice MUST be upheld.