When believers gather as Church, then they become the body of Christ, but this doesn't mean anyone who gathers together. According the creed we on this forum believe in one, holy, catholic and apostolic church. This can mean a lot of things, but certainly it narrows down the potential. In Acts we are told that new believers held steadfast the following:
THE Teaching of the THE Apostles
THE Communion
THE Breaking of Bread
THE Prayers
so unless the gathering includes these four requirements of scripture, then it's not really a gather of "the Church" and therefore is not the body of Christ. And yes, that mean no communion - no gathering.
Back to icons. THE teaching of THE apostles is preserved in the Church, just as Paul told Timothy to teach a successor, the Church in general has followed this command, passing THE teaching from generation to generation as guided by the Holy Spirit and in keeping with the other tenants listed above. This did not exclude the Church from controversy, far from it, but rather each and every controversy was faced accordingly. The controversy surrounding icons emerged and was tested. In the end the Church that gathered as the one, holy, apostolic Church resolved the controversy in favor of icons. This is history. There is no new controversy here. The Church has spoken.
Now, if you wanted to discussion which icons are accepted, that would be different. There are some icons if painted, would not really be icons according to the Church and unfortunately, as file will soon point out, there are some heretical icons out there, even in churches, but this is a completely different issue.