You know what's funny, brother? The recent abortive riots in Iran with their borderline Islamophobic tendencies, which failed to mobilize more than a few tens of thousands out of 85 million, were fully backed and incited by a Saudi-owned Persian language broadcaster based in London (now in the USA) calling itself "Iran International". In fact that channel played the biggest role of all in attempting to fan the unrest. You're welcome to have a look at the corresponding thread at the Iranian section of the forum, where this is perfectly documented.
The entire exiled opposition to the Islamic Republic, including its secular nationalist component around which the Islamophobic sub-current has historically gravitated, happens to be bankrolled by the regime in Riyadh. While Moslem Iranians loyal to the Islamic Republic, Iran's legitimate government, are the first to denounce those same Islamophobic oppositionists.
At any rate though, it's quite rich of Saudi regime supporters to try and demonize Iran and her people by singling out a secularist ultra-nationalist opposition which the Saudi regime itself is showering with US dollars. Fact is that the Saudi regime sees eye to eye with these people because both are united in their hostility towards the Iranian government. Any attempt at amalgamating the Islamic Republic and its opposition is, naturally, an exercise in downright absurdity.
Let's see whether the recent agreement would lead to a rectification of this Saudi policy. The Saudis no doubt entered the business of funding the exiled Iranian opposition because they and their western patrons lost badly to Iran's allies in conflict theaters across the region (Lebanon, Syria, Iraq, Yemen) so they thought they'd use said funding as a bargaining chip on the day negotiations would take place.
As to whether or not Iranian Moslems are sincere in their beliefs and faith, rather than allowing online drivel from dubious sources to mislead you, I think you'll know better simply by referring to the role Iran played in assisting Bosnian brothers during the war. Certainly it wasn't "hatred for Islam" which motivated the assistance. I'm confident you're knowledgeable enough not to fall for such nonsense.
Shahid Soleimani and friends in Bosnia during the conflict.
IRGC martyr Rasul Heydari and his Bosnian comrade.