What you are saying is happening, offending other faiths, but it isn't what Prabhupada instructed. He said you bow down for a mayavadi sannyasi. He also said Christianity and Islam are bona fide religions, and explained that any religion that teaches how to love God is a bona fide religion. He said Jesus is a manifestation of Krishna's Shakti, a saktyavesavatara.
Being a vaishnava means to be humble and to follow the country's laws. Ordinary politeness, being a gentleman, should be one of the vaishnava's weapons.
And yes, the golden age is happening. We can compare the standard of life, the average lifespan, and many things to just 500 to 1000 years ago, We can clearly see a drastic improvement over the last 500 years. Consciousness is being raised together with science. It is just a matter of time before the scientists, widely discover and accept the concept of God (or an intelligent being) as the creator as opposed to a cosmic soup - chaos.
We now all need to work together. Caitanya says God has unlimited names and we can chant them all togehter; muslims, hindus, christians, brahmavadis (more commonly known here as mayavadis), shaivas, vaishnas, shaktas, atheïsts, everyone can chant and dance together. There aren't any hard and fast rules for it.
About offences in Iskcon: Say sorry when you hurt someone, it is just common sense. Also don't critisize too much, Jesus says: For what you judge another, you shall be judged. This should be common vaishnava knowledge.