Is one who backs infidels against Muslims for worldly gain to be considered an infidel, and what is the meaning of "backing" (al-mutaharah) in the discourse of scholars concerning the chapter on apostasy?

The manifestation of supporting disbelievers occurs when a Muslim becomes a helper, supporter, and backer of disbelievers against Muslims. This is disbelief that contradicts faith if this action stems from love for them and a desire for their triumph over Muslims. However, if the motive for supporting them is a personal interest, fear, or worldly enmity, then this manifestation is considered a major sin, but it does not expel its perpetrator from the fold of Islam.