Yes, that's true - coinage (and that includes eg commemorative £5 coins) has legal tender status throughout the UK although for smaller coins it's only for limited amounts. Bank of England notes in denominations below £5 used to have legal tender status in Scotland when they existed too. Northern Irish notes are also not legal tender anywhere in the UK, including NI.
Outlook/Exchange is still the undisputed king in this area, and given the level of integration into Office and various enterprise mobility products, I don't see its hold in the enterprise being broken any time soon, more's the shame. If they want to be successful, they'll need to work out how they deal with that problem because realistically the only people who will be paying for this in large numbers are the enterprise market. That means it will need to work in a complementary way, either as a plugin for Outlook or an alternative Exchange client (which will be a harder sell).
Unfortunately for them, an Enterprise Office 365 subscription runs to $20/seat/month for the entire suite (if you don't need PSTN/PABX integration for Skype). They are not going to get anything close to $30/seat/month. In fact I suspect they may even struggle to get subscription pricing through that market.
It wouldn't be that hard to provide alternative versions of the small number of "important" packages which depend on either libpam-systemd or systemd itself (I'm talking about things like gdm3, gnome-settings-daemon, lightdm, network-manager and policykit here). There aren't many of them (there are also a few packages which are uninteresting and have a hard depend which I'd be less fussed about.)
Slightly further up the difficulty scale is libsystemd0; it might perhaps be possible to replace that with a safe do-nothing shim if you really cared about it (eg because you want to reduce the potential security attack surface).
Ultimately, I think Debian should have worked harder to support multiple init systems. A requirement for packages above a certain importance level to support sysvinit in addition to systemd and to provide installable alternatives which don't create dependencies on systemd packages (other than perhaps libsystemd0) would have assuaged most people's concerns for very little effort.
The problem the US have with Huawei is about more than whether they have been spying or not - it's about the fact that the US as a nation have lost control of the technology because the Chinese are the only credible firms producing 5G equipment. That means that they can control or break the standards in subtle ways, and then deliberately make it much harder or impossible for US (or other non-Chinese) firms to compete on a level playing field (by making only Chinese equipment truly cross-compatible). I don't know if this is actually happening but it is a legitimate concern - it's like the difference between Microsoft's OOXML vs ODF - the OOXML standard is technically open but it's close to impossible to truly implement something which is properly cross-compatible with MS Office.
A level playing field with open and transparent standards is something we should all be concerned to maintain because the next logical stage will be for the firms benefiting from the closed standard is to leverage that "lockin" to raise prices.
Which is why rewriting basic system utilities from scratch, repeatedly, instead of relying on the battle-hardened code which has already had its fair share of vulnerabilities exploited and patched over a long lifespan, is likely to increase the attack surface.
systemd's apparent need to replace/rewrite basic system utilities which have worked for decades (in some cases) and don't need changing IS part of the problem.
God clearly doesn't want us to burn oil, or he wouldn't have buried it almost entirely under assholes and terrorists.
You mean, here?
UNIX is hot. It's more than hot. It's steaming. It's quicksilver lightning with a laserbeam kicker. -- Michael Jay Tucker