Is Magento 2 good?

Question

Magento

Hey!
I'll get right to the point: recently, working with opencart and resting on its ideology, like: "if you want more functionality, refuse updates or use crutches", I look towards Magento
But there are many implicit points that, I hope, the community can dispel or confirm.
1. Magento is gluttonous. I just deployed a test application, opened htop in the terminal and, going through the pages, watched how php-fpm loaded the processor to capacity. I have never worked with Zend, but all yii fans say that it is very heavy.
2. Complex architecture. Looking at widgets and blocks, I remember Bitrix with its infoblocks. And the feeling of using them is about the same: you don’t have to leave the admin panel, because it will still be very difficult to rewrite the logic at a lower level and is not recommended at all, but you can do a lot in the admin panel.
3. Extensive development. Looking at a bunch of xml and the lack of support for pgsql, mongo and other databases, there is a feeling that Magento attracts investments, but does it like Bitrix, merging into marketing, and not introducing chips and goodies.

Answer 1

If you run into a complex box, you need to go towards frameworks, three horsemen:
Symphony, Laravel or Yii2
All your conclusions are correct.
And the result - I won’t say anything about Magento ¯\_(ツ)_/¯ Large products for a large number of customers will always be cumbersome.
There are also such fast frames as Slim and Phalcon (actually a rocket), here is an example for a highly loaded project. Falcon made by Zend speed :)
https://youtu.be/uv_haIaV_E8?t=24m2s
but you need to consider the entry price and the support price, it's far from a fact that the best options

Answer 2

if you have a serious store, do not use any CMS, otherwise nothing good will come of you

Answer 3

1. No matter how much I watched projects in production mode, all the same, all M1 is faster than M2, although the increase is declared.
2. Yes, it is difficult, but very powerful.
3. Why ebay sponsors? With development, everything is ok, you can use memcached, redis, in fact, you can write a layer for other nosql. pgsql I think you can use Zend like there is an adapter.