Bitcoin probably already does far more than 7tps today if you take into account off-chain services in the market today( changetip/coinbase/exchanges/etc..).
It is almost certain that Lightning will take over all shopping txns once it is implemented, simply because it is cheaper and offers instant confirmation.

Its important to consider what is being centralised.

-Centralising mining/validation centralises control over the protocol itself, meaning everything is subject to change (money supply, censorship, etc..). Getting this wrong will destroy the currency.

-Centralising transaction processing over a trustless system like lightning only allows a hub to lockup your money for x amount of time. They can never steal it or touch the protocol.  Choosing a bad hub will lock up your money for X blocks depending on what X you chose.

Also id like to add, that the grand vision for lightning is to have a decentralised hub network like mining is today, meaning your wallet will automatically query the list of lightning hubs out there and choose one based on your cost preferences/configuration. Similar to how packet routing works today for the internet, your wallet will find the most cost efficient hub route to your payee.

They consider it too big when viewing it from a decentralization point of view. Even at 1MB, mining is centralized, full node count continues to drop drastically every year, the recent fork revealed that majority of hashpower was SPV mining, meaning they were blindly building blocks without even checking if txns were valid! They consider decentralization the upmost important property of Bitcoin because that is the ONLY 1 thing that sets it apart from any other currency today. Their view is that once you lose decentralization, Bitcoin becomes just another currency, ie. vulnerable to manipulation, censorship, inflation like other currencies. With regards to too many txns for 1MB, they can all still work via offchain DBs like coinbase/changetip (just as much of the financial system functions today, only inter-bank settlements are cleared with the central bank) or more promisingly Lightning which has the added benefit of being trustless and instant confirmation.

In short, their view is that bitcoin should not risk decentralization to allow onchain txns for everyone and everything. All of that can be done on higher layers.

Just to update on my withdrawal.

I finally just got the btc, admin was extremely polite/apologetic/responsive throughout the past 5 days for the delays which greatly helped ease my worries of having fallen for a scam.
As compensation, they threw in an additional ~1% of my withdrawal amount.

While there was a hiccup in their administrative procedures, they are atleast honest, which is perhaps the most important quality for any site with custody of user's money.

Its not nonsense. Its been 4 days now.
So far support has claimed that its the weekend and that the management is not available to top up the hot wallet.

Im being patient for now until tomorrow.

Well, ive been waiting for my withdrawal for over 3 days.
When will i get my BTC?