I used to think that. But from my experiences, their customer service is crap, and I had a bunch of downtime on their VPS offering with no compensation offered.
I've stayed away from them since then. Not a very impressive company, and I'm not too surprised they're failing to deal effectively with this DDoS.
Gandi is a domain registrar first and in that respect they're lightyears ahead of the competition. They don't do shady stuff of squatting on your domain searches etc.
If you choose to use a value added service like VPS, you should expect subpar experience. You can go to any cloud provider and find a service for which you're going to have a worse experience than you had with Gandi VPS.
Gandi is not awful for managing domains (although they had issues with DNS management for years) but Gandi is a no-no-everything-constantly-on-fire for everything else, notably VPS and networking stacks
Try njalla, a privacy focused domain provider. It was founded by Peter Sunde, one of the original creators of The Pirate Bay. You can pay with crypto currencies and they even have a .onion domain of their website, so you can reach them over Tor.
They buy the domain themselves, and let you pay with Dogecoins -- possibly a good deal for the next Pirate Bay, but not what I would use for general domain registration. There is a good chance one day they will go down and take your (their!) domain with them.
From their website:
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We're not actually a domain name registration service, we're a customer to these.
[...]
When you buy a domain in our system, we're actually purchasing it for ourselves. We will be the actual owners of the domain.
If I bought what turned out to be blunt or broken kitchen knives from IKEA, and they refused to accept a return and offer a refund, I wouldn't shop there again either.
I've stayed away from them since then. Not a very impressive company, and I'm not too surprised they're failing to deal effectively with this DDoS.