I think you are missing the scriptural principles outlaid by Paul and even Peter addressed it.
Apostle Paul wrote about it to the early church in regard to eating, drinking etc. We may not have those same issues in 2021 but Paul wrote under inspiration to
address the principle.
To the many churches
that don't have a cultural dress code then it doesn't apply but we can't ignore the many churches across the globe which have cultural standards.
I would rather submit to a cultural dress code and be invited to minister in a church and hopefully be a blessing than dismiss them as old fashioned etc.
Ministers have to be aware of these principles when dealing with missions internationally as many doors will shut or open.
The great Evangelist Reinhard Bonnke at times dressed specifically to the customs of the nation. He lead millions to Christ and he submitted to the cultural dress customs when it was relevant.
Personally I am happy to wear shorts and casual clothing to Church because I feel free from any cultural dress code standard but I believe God expects Christians to honour the standards of a church if they visit, attend or minister.
Even believers that are liberated to wear casual clothing would get offended if someone sat in front of them with certain attire.
There are some that can sit in church with the most revealing outfit and tell everyone..'hey times have changed get with it'