Are you rich?
I think what you say is not fundamental in managing finances. and what you say is universal because it doesn't give any specific formulation.
1. Everyone has a plan whenever they spend money even a few minutes before.
2. Basically humans have to be simple but sometimes we have to be arrogant to keep the financial principles we hold.
3. I think we should follow the trend but not always even though the value will be lost but if it is a must in running our business why don't we buy it? where everyone has an android phone yes, we only use landlines and how can we accelerate our business expansion if we are still using vehicles from the 90s?
4. If indeed the goal is to build relationships with those who have a lot of money so that we know the business they run and we can study, eat and drink coffee in places that are quite draining on our wallets, it doesn't matter if the goal is to expand relationships and strengthen connections for development ourselves and our business.
5. Maybe you mean FOMO where everyone buys because a lot of people talk about it and buy it. is a natural thing when we start to dive into the world of investment, but after a long time I think it is necessary to understand what is called risk management from various aspects.
OP doesn't have to be rich to give this advice.
Maybe he might also be saying all of what he said out of personal experience.
Rather than counter all he has said while not respectfully add to it or make corrections where necessary. If you actually took your time to carefully read to learn from all he said rather than reading to counter his motions, you'll understand that he was so considerate enough to accommodate the facts that it isn't easy to keep up with money and he just give us a hack that seem right to him to avoid running into dependency.
OP said something about people who have to buy the latest phones, for instance iphone just to show off without having any significant use for it, in a country like mine, I've seen a lot of people do a whole lot of things just to own the latest iphones and at the end of the day have no dedicated use for it but just to snap and edit pictures for social media that they wouldn't even have upto 100 likes.
OP also mentioned people buying cars for the sake of trends without putting into consideration the cost of fueling and maintenance and later end up selling it at a very cheap price.
I totally agree to this because early this year, an oil firm paid a huge sum of money to a neighbouring community for oil spillage on their land and the money was shared to all members of the community with each citizen having over $9k, most of them got new cars worth over $5k and now selling for less than $3k just within a year which isn't nice And i was an agent to selling two cars they bought then